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257 Cards in this Set
- Front
- Back
What are the bones of the talocural (ankle) joint?
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tibia, fibula, talus
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Bones of the foot (superior). Excludes toes.
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Bones of the foot (superior). Toes.
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Bones of the foot (medial).
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Bones of the foot (lateral).
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Ligaments of the ankle (medial).
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Ligaments of the ankle (lateral).
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Pronation is a combination of:
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Eversion, abduction, dorsiflexion
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Supination is a combination of:
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inversion, adduction, plantar flexion
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What is the most common injury in physically active people?
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Ankle sprains.
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What is the most common type of ankle sprain?
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Inversion combined with plantar flexion
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What are the most commonly injured ligaments in a plantar flexion and inversion sprain?
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anterior talofibular, calcaneofibular, posterior talofibular, anterior and posterior tibiofibular.
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What is the most commonly injured ligaments in an inversion sprain?
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Calcaneofibular ligament
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What are the most commonly injured ligaments in a dorsiflexion sprain?
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anterior and posterior tibiofibular ligaments
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What are the most commonly injured ligaments in an eversion sprain?
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Deltoid ligaments, anterior and posterior tibiofibular ligaments (when it is a severe sprain), interosseous membrane (with an increase in the external rotation)
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What ligament is most often affected in inversion ankle sprains?
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Anterior talofibular
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What decreases the likelihood of eversion injuries?
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Bone protection and strength of the delltoid ligament
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What movement causes a distal tibiofibular sprain?
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External rotation or forced dorsiflexion.
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Osteochondritis dissecans
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Injury to the cartilage or cartilage/ subchondral bone in which a bone fragment can be partially or completely detached.
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When does an ankle affected with osteochondritis dissecans appear to lock with movement?
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When the bone fragment moves into the joint.
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Symptoms of Osteochondritis dissecans
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-chronic ankle pain
-intermittent swelling of the ankle |
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Medial capsular ligament
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Metatarsalgia
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-pain in the foot between 2nd and 3rd metatarsal head
-lowered transverse arch |
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Treatment of Metatarsalgia
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Place metatarsal cushion in shoes
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Toe sprain
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-caused by kicking an object
-sprain of joint capsule and ligaments |
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Pain and symptoms in toe sprains
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-immediate and intense, but of short duration
-swelling and discolouration in 1-2 days -residual pain and stiffness for several weeks -pain at end range of motion |
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Hyperextension of big toe (Turf toe)
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-results in a sprain
-swelling and pain that increase during the push phase |
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Hallux Valgus (common name)
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Bunion
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Hallux Valgus (description)
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-exostosis on first metatarsal head
-inflammation, lateral deviation of big toe -degenerative process (osteoarthritis) -pain when walking |
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Hallux Vagus treatment
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-orthotics to correct biomechanics problems and prevent progression
-surgery |
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Hallux Rigidus
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-development of osteophytes on dorsal part of the first metatarsalphalangeal joint
-loss of dorsiflexion -degenerative process -change in biomechanics of walking |
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Halluz rigidus treatment
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-orthotics to correct biomechanics
-surgery in some cases |
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Tibialis anterior
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Dorsiflexion and inversion of the foot
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Extensor Digitorum Longus
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-Attaches to medial surface of fibula
-Extension of toes and dorsiflexion of ankle -tendon splits to attach to 2-5 phalanges |
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Extensor Hallucis Longus
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-Attaches to medial surface of fibula
-tendon extends to big toe -dorsiflexion, inversion, eversion |
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Fibularis Longus
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-Attaches to proximal head of fibula
-eversion and plantar flexion |
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Fibularis Brevis
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-attaches to distal 2/3 of lateral surface of fibula
-eversion and plantar flexion |
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Fibularis Tertius
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--attaches to distal 1/3 of media surface of fibula
-eversion and dorsiflexion |
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Tibialis Posterior
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-attaches to head of fibula
-inversion and plantar flexion |
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Flexor Digitorum Longus
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-sits medial+anterior to tibialis posterior
-flexion of phalanges 2-5 |
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Flexor Hallucis Longus
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-flexion of big toe
-plantar flexion |
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Gastrocnemius
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-causes bulge in calf
-plantar flexion -knee flexion -attaches to Achilles tendon |
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Soleus
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-attaches to head of fibula
-involved in walking -plantar flexion |
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Plataris
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-plantar flexion
-knee flexion |
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Function of the Anterior Compartment
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Dorsiflexion
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Muslces of the Anterior Compartment
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-Tibialis Anterior
-Extensor Digitorum Longus -Extensor Hallucis Longus -Fibularis Tertius |
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Nerves of the Anterior Compartment
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Deep branch of fibular nerve
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Function of the Lateral Compartment
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Eversion
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Muscles of the Lateral Compartment
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Fibularis Longus and Brevis
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Nerves of the Lateral Compartment
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Superficial Fibular Nerve
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Function of the Superficial Posterior Compartment
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Plantar Flexion
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Muscles of the Superficial Posterior Compartment
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-Gastrocnemius
-Soleus -Plantaris |
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Nerves of Superficial Posterior Compartment
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None
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Function of the Deep Posterior Compartment
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Inversion
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Muscles of the Deep Posterior Compartment
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-Tibalis Posterior
Flexor Digitorum Longus -Flexor Hallucis Longus |
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Nerves of the Deep Posterior Compartment
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-Tibial Nerve
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Compartment Syndrome
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Increased pressure within one of the four leg compartments
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Acute Compartment syndrome
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-occurs due to direct trauma
-medical emergency |
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Chronic compartment syndrome
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symptoms occur with activities always around the same time/distance
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Signs and symptoms of compartment syndrome
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-deep and throbbing pain, localized in the involved compartment
-numbness if pressure is large enough to compress nerve |
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Achilles Tendinopathy
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-pain and stiffness in middle of Achilles
-palpable nodule on tendon -usually no inflammation -failed response to healing/ degeneration of tendon -overuse injury |
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Components involved in Tarsal Tunnel Syndrome
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Tibialis posterior, flexor hallucis longus, flexor digitorum longus, tibial nerve, tibial artery, tibial vein
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Tarsal Tunnel Syndrome
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-Area behind the medial malleolus
-pain and parenthesis along the medial and plantar foot -muscle weakness -compression of the structures inside the tunnel |
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Plantar fasciitis
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-irritation of the plantar fascia
-pain at the insertion of the plantar fascia on the lower part of the calcaneus -pain is worse in the morning and subsides after a few steps |
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Innominate (coxal) bone
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union of the ilium, ischium, pubis
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Factors affecting the shape and configuration of the proximal femur
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-bone's ossification centres
-force of muscle contraction -weight bearing -blood circulation |
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Femoral dysplasia
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-abnormal growth and development resulting in misshaped proximal femur
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Angle of Inclination
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-angle in the frontal plane between the neck of the femur and the medial side of the femoral shaft
-normal angle allows optimal contact of articular surfaces |
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Angle of inclination at birth
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140-150
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Angle of inclination in adults
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125 degrees
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Coxa Vara
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angle markedly less than 125 degrees
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Coxa Valga
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angles markedly above 125 degrees
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Femoral torsion
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-angle between the head of the femur relative to the femoral condyle
-allows optimal alignment of the articular surfaces |
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Normal anteversion
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-head of the femur is rotated 15 degrees anterior relative to the condyle
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Excessive anteversion
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-Markedly more than 15 degrees
-in children, it brings the child to walk with toes pointed inward |
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Retroversion
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markedly less than 15 degrees
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Femoral torsion at birth
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40 degrees
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Acetabular labrum
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-labrum of the hip is a flexible ring of fibrocartilage which surrounds the outer circumference of the acetabulum
-increases stability of hip -poor blood supply to the area -rich in afferent nerve (proprioception, pain sensation) |
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Injury and degeneration of the labrum
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-may be acute but often overuse
-tear usually located anterior/superior portion of the labrum |
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Symptoms of injury and degeneration of the labrum of the hip
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-often asymptomatic, but may click, lock
-limited range in motion -pain in the groin and anterior part of the hip -difficult to diagnose clinically |
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Ligaments reinforcing the articular capsule
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-Iliofemoral
-pubeform -ischiofemoral |
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Sagittal plane rotation
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-slack iliofemoral ligament
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Frontal plane rotation
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horizontal plane rotation
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Anterior/exterior pelvic tilt
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Anterior and medial muscles that originate on pelvis or spine
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-Iliopsoas (iliacus and psoas major)
-sartorius -tenor fascia latae |
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Psoas Major
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-attaches to lesser trochanter
-flexion and lateral rotation of the thigh |
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Iliacus
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-attaches to lesser trochanter
-flexion and lateral rotation of the thigh |
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Sartorius
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-flexion, abduction, lateral rotation of hip
-flexion of knee |
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Tensor fasciae latae
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-flexion, medial rotation, abduction of the thigh
-stabilizes trunk |
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Muscles of the medial compartment of the thigh
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-adductor magnus
-adductor longus -adductor brevis -pectineus -gracilis |
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Adductor magnus
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-adduction and flexion of hip
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Adductor longus
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--adduction and flexion of the hip
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Adductor brevis
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-adduction of the hip
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Pectineus
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-adduction and flexion of the hip
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Gracilis
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-these are the groin muscles that people claim to have pulled
-most superficial muscle on the medial side of the thigh -flexion, medial rotation, adduction of the hip -flexion of knee |
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Gluteal muscles
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-gluteus maximus
-gluteus medius -gluteus minimus |
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Gluteus maximus
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-external rotation and extension
- |
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Gluteus medius
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-hip abduction
-resists hip adduction |
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Gluteus minimus
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-attaches to greater trochanter
-abduction of the hip -prevents hip adduction |
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Lateral rotators
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-piriformis
-obturator externus -obturator internus -gemellus -quadratus femoris |
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Piriformis
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-greater trochanter
-external rotation of the thigh |
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Gemellus inferior
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-attaches to ischial tuberosity
-lateral rotation of thigh |
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Gemellus superior
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-lateral rotation of the thigh
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Quadratus femoris
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-attaches at ischial tuberosity
-lateral rotation and adduction of the thigh |
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Obturator internus
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-attaches to greater trochanter
-abduction and external rotation of the thigh -stabilizes hip |
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Obturator externus
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-attaches to greater trochanter
-adduction and lateral rotation of the thigh |
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Muscles of posterior compartment
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-hamstring (biceps femoris, semitendinosus, semimembranosis)
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Long head of the biceps femoris
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-attaches to ischial tuberosity and head of the fibula
-extension of hip -flexion and lateral rotation of knee Muscles of posterior compartment |
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Short head of biceps femoris
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-attaches at head of the fibula
-extension of hip -flexion and lateral rotation of knee Muscles of posterior compartment |
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Semimembranosus
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-attaches at ischial tuberosity
-extension of the hip -flexion of the knee Muscles of posterior compartment |
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Semitendinosus
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-attaches to ischial tuberosity
-knee flexion -hip extension Muscles of posterior compartment |
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Muscles of the anterior compartment of the thigh
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-quadriceps femoris (rectus femoris, vastus lateralis, vastus medialis, vastus intermedius)
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rectus femoris
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-knee extension
-hip flexion Muscles of the anterior compartment of the thigh |
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vastus intermedius
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-knee extension
Muscles of the anterior compartment of the thigh |
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Vastus lateralis
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-attaches to greater trochanter
-extends and stabilizes knee Muscles of the anterior compartment of the thigh |
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Vastus medialis
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-knee extension
Muscles of the anterior compartment of the thigh |
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Primary hip flexors
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-iliopsoas
-sartorius -tensor fasciae latae -rectus femoris -adductor longus -pectineus |
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Secondary hip flexors
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-adductor brevis
-gracilis -anterior part of gluteus minimus |
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Rectus abdominus as stabilizer
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-prevents anterior tilt caused by the inferior pull of the hip flexor muscles
-when its activation is reduced, contraction of the hip flexor muscles causes an anterior tilt of the pelvis |
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Primary hip extensors
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-gluteus maximus
-hamstring (except short head of the biceps) -posterior head of adductor magnus |
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Secondary extensors of the hip
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-posterior part of gluteus medius
-anterior head of adductor magnus |
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Primary adductors of the hip
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-pectineus
-adductor longus -gracilis -adductor brevis -addcutor magnus |
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Secondary adductors of the hip
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-biceps femoris
-gluteus maximus -quadratus femoris |
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Primary hip abductors
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-gluteus medius
-gluteus minimus -tensor fasciae latae |
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Secondary hip abductors
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-piriformis
-sartorius |
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Primary internal rotators of the hip
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-none in the anatomical position
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Secondary internal rotators of the hip
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-anterior part of gluteus medius and minimus
-tensor fasciaea latae -adductor longus -adductor brevis -pectineus |
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Primary external rotators of the hip
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-gluteus maximus
-piriformis -gemellus inferor -quadratus femoris -obturator internus |
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Secondary external rotators of the hip
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-posterior part of gluteus medius
-posterior part of gluteus minimus -obturator externus -sartorius -long head of biceps femoris |
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Causes of hip abductor weakness
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-neurological disorders
-arthritis -post-surgery -chronic hip injury -postural change |
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Trendelenburg's Sign
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Hip fractures
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-95% as a result of a fall
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Mortality rate after hip fracture (within 1 year)
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12-25%
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Osteoarthritis of the hip (description)
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-deterioration of articular cartilage
-decreased joint space -sclerosis of the subchondral bone -presence of osteophytes |
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Osteoarthritis of the hip (symptoms)
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-atrophy and weakness of hip muscles
-stiffness in the morning -altered gait |
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Hip dysplasia
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-abnormal development of the hip
-can cause dislocation or subluxation of the hip in newborns -can be undiagnosed in children for months -can lead to premature osteoarthritis |
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Avascular necrosis (AVN) of femoral head (etiology)
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-results from temporary or permanent loss of blood supply to the proximal femur
-can be caused by traumatic conditions such as hip dislocation, fracture, etc.; or by non-traumatic circumstances such as steroids, abnormal blood clotting, excessive alcohol consumption |
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AVN (signs and symptoms)
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-usually none in early stages
-joint pain during weight bearing that progresses to pain during rest -pain gradually increases as bone begins to collapse -may have decreased range of motion -can lead to osteoarthritis |
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AVN (management)
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-diagnosed via radiology/ MRI/ CT
work to improve the use of the joint, but prevent further damage -usually surgical |
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Legg-Calvé-Perthes disease (etiology)
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-AVN of the femoral head in children 4-10 years
-caused by trauma in 25% of cases -articular cartilage becomes necrotic and flattens |
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Legg-Calvé-Perthes disease (signs and symptoms)
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-pain in groin, which can radiate to abdomen or knee
-limping -possible limited range of motion |
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Legg-Calvé-Perthes disease (management)
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-bed rest to alleviate synovitis
-supports to avoid direct weight bearing -with early treatment, it is possible for the femoral head to re-ossify and revascularize |
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Legg-Calvé-Perthes disease (complications)
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-if not treated quickly, femoral head may be deformed and osteoarthritis may develop later in life
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Slipped capital femoral epiphysis (etiology)
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-found mainly in boys aged 10-17
-may be linked to GH -occurs in both hips in 25% of cases -25% caused by trauma |
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Slipped capital femoral epiphysis (signs and symptoms
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-pain in the groin, which progresses over weeks and months
-pain in hip and knee during passive and active movements -limited abduction, flexion, and internal rotation -limping |
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Slipped capital femoral epiphysis (management)
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-bed res in the case of minor displacement
-surgery in the case of major displacement -if not detected or surgery doesn't help, severe problems can develop |
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Snapping hip (etiology)
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-common in young dancers, gymnasts, hurdlers
-movements predispose muscles around hip to become unbalanced -torn cartliage or labrum -ex. IT-band moving over gerater trochanter; iliopsoas moving over iliopectineal eminence |
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Snapping hip (symptoms)
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-popping sound, with or without pain
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snapping hip (management)
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-reduce pain and inflammation
-correction of biomechanical problems |
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Osteitis pubis (eiology)
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-distance runners, soccer, football, wrestling
-repetitive stress of pubic symphysis and to the muscles that attach near it |
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Osteitis pubis (symptoms)
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-chronic pain and inflammation of the groin
-sensitivity at the pubic tubercle -pain during running, sit ups, and squates |
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Osteitis pubis (management)
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-rest and gradual return to activity
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How many of the muscles that cross the knee will also cross the hip or ankle?
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2/3
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How is knee stability provided?
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By the soft tissues, and NOT the configuration of the bones
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Patella
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Genu valgum
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-angle between the femur and the tibia
-normally 170-175 degrees -femur sits at125 degree angle to the longitudinal axis of rotation |
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Excessive genu valgum
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"knock-knee"
<165 degrees |
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genu varum
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"bow-leg"
>180 degrees |
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Gastrocnemius
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-knee flexion
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Muscles responsible for flexion and internal rotation of the knee
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Sartorius, gracilis, popliteus, semimembranosus and semitendinosus, biceps femoris
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Quadriceps
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-extension of the knee
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Miniscus
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-reduces compressive forces (ex. between tibia and femur)
-stabilize joint during movements, lubricate joint cartilage, help guide joint movements -avascular inner part (receive blood peripherally) -reduce the pressure on articular cartliage in the knee |
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Meniscus tear
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-compressive forces in knee can reach 2.5-3 times the body weight of a person when walking
-torn miniscus significantly increases the pressure on the articular cartliage and thus produces premature osteoarthritis |
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Meniscus tear (knee)
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-occurs due to forced rotation with flexed foot and knee planted
-most often in medial |
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Types of meniscal tears
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Deep structures of the knee
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Menisci, ACL, LCL, PCL, PML
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Medial collateral ligament
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-resists valgus forces
-resits knee extension -resists extreme rotation of the knee |
|
Sprain of the medial collateral ligament
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-occurs due to valgus force with the foot planted (hyperextension of the knee)
|
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Lateral collateral ligament
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-resists varus forces
-resists knee extension -resists extreme knee rotation |
|
Sprain of the lateral collateral ligament
|
-occurs due to varus force with the foot planted (hyperextension of the knee)
|
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Function of ACL and PCL
|
-multiple plane stability of the knee, mostly in the sagittal plane
-guide the natural arthrokinematics, espeically those related to the restraint of sliding the tibia and the femur -contributes to knee proprioception |
|
Anterior Cruciate Ligament
|
-tension and orientation changes when the knee flexes/ extends
-tension is larger in full extension -multidirectional stability due to oblique orientation -resists anterior translation of the tibia |
|
ACL and quads
|
-quads= antagonist of ACL
-contraction in a straight knee puts tension on ACL fibers |
|
Drawer test
|
-hcp sits on the person's foot and pulls the tibia either anteriorly or posteriorly
-excessive anterior movement points to torn ACL -excessive posterior movement points to torn PCL |
|
Mechanism of ACL injury
|
-torn the most often
-will result in secondary injury to other tissues -occurs due to change of direction, deceleration (knee vlagus/varus, internal/external rotation, anterior knee shear) -30% due to contact -women more at risk |
|
Sports with common ACL sprains/ tears
|
-football
-westling -hockey -soccer -basketball |
|
Risk factors for ACL tears in non-contact sports
|
-women land with more pronounced valgus angle and knee extension than men
-decreased strength or muscle control of knee -decreased strength or muscle control of abductor muscles and external rotators of the hip |
|
Prevention of ACL tears
|
-pre-season fitness
-proprioception exercises -plyometrics -exercises for lower back and ab muscles -stretching for shot/ tight muscles -endurance training for hips |
|
ACL surgery
|
-focus post-op on increasing strength and control of quads (undergo inhibition, atrophy, and weakness after injury) and the pattern of activaiton of other muscles that allow knee movement
-avoid exercises with full extension of the knee in early rehab -encourage closed chain exercises |
|
ACL strain
|
increases when the line of action of the quads is opposite to that of the ACL
-is proportional to the amount of force produced by the quads -less tension is produced when the hamstrings also contract |
|
Posterior Cruciate Ligament
|
-thicker than the ACL
-tension increases during flexion |
|
Mechanism of PCL injury
|
-occur due to large force of impact OR falling on the flexed knee
|
|
Patella
|
-increases the distance between the femur and quads, which increases the internal lever arm
-this means that the quads don't have to produce as much force in order to match the external resistance |
|
Two factors affecting the patellofemoral compressive force
|
-force generated by the quads
-angle of knee flexion |
|
Patellofemoral syndrome
|
-misalignment of the patella
-can be treated in different ways |
|
Osgod-Schlatter disease
|
-apophysitis occurs at the tibial tuberosity
-repeated avulsion of the patellar tendon -cartilaginous initially, then cllus develops (enlargement of the tibial usually resolved by the age of 18 |
|
Larsen-Johansson disease
|
-similar to Osgood-Scholatter but located on the apex of the patella
|
|
Patellar tendinopathy
|
-degenerative process at the patella tendon caused by repeated movement
-pain and tenderness directly on the patellar tendon |
|
treatment of patellar tendinopathy
|
eccentric loading of the quad
-isolate the tendon by placing th patient on an inclined plane |
|
Iliotibial band syndrome
|
-muscle imbalance of the hips, pronation
-irritation of iliotibial band in the region of the lateral femoral condyle -lateral knee pain |
|
Pes Anserinus syndrome
|
-muscle imbalance in the hips, pronation, other causes
-irritation of the Pes Anserinus area causes pain |
|
Shoulder
|
-very unstable
-muscles are necessary for stability |
|
Ligaments and muscles that attach to the Coracoid Process
|
|
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Muscles that attach to the lesser tubercle
|
Subscapularis
|
|
Muscles that attach to the greater tubercle
|
Supraspinatus, Infraspinatus, Teres Minor, pectoralis major
|
|
Angle of inclination between the shaft and head of the humerus in the frontal plane
|
135 degrees
|
|
Retroversion of the humeral head relative to the distal humerus
|
30 degrees
|
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Joints of the shoulder complex
|
-glenohumeral
-scapulothoracic -acromioclavicular -sternoclavicular |
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Movements of the scapulothoracic joint
|
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Ligaments of the sternoclavicular joint
|
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Movement of the sternoclavicular joint
|
|
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Ligaments of the acromioclavicular joint
|
|
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Which ligament is the first to be sprained in the acromioclavicular joint?
|
Acromioclavicular ligament
|
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What movement would cause the conoid and trapezoid ligaments to be down?
|
Pushing down on the scapula at the acromion
|
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Why won't the coracoacromial ligament get sprained?
|
Because the coracoid process moves along with the acromion.
|
|
Grade 2 or 3 sprain of the acromioclavicular joint
|
-the clavicle is being pushed up, or the acromion is being pushed down
-visible bump above the shoulder |
|
Elevation of scapulothoracic joint
|
Combination of elevation at the sternoclavicular joint and downward rotation at the acromioclavicular joint
|
|
Pronation of scapulothoracic joint
|
Combination of protraction at the sternoclavicular joint and slight internal rotation at the acromioclavicular joint
|
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Upward rotation of the scapulothoracic joint
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Combination of elevation of the sternoclavicular joint and upward rotation of the acromioclavicular joint
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Glenohumeral joint
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Joint capsule of the glenohumeral joint
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-very loose therefore allows a great range of motion
-in anatomical position, the inferior portion appears slackened or redundant, called the axillary pouch -reinforced by thicker external ligaments |
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Stability to the glenohumeral joint
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-coracohumeral and capsular ligaments
-rotator cuff and long head of the biceps |
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Rotator cuff
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-supraspinatus
-infraspinaturs -teres minor -subscapularis -protects and stabilizes the glenohumeral by preventing the humerus from sliding forward |
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Long head of the biceps
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-restricts anterior translation of the humeral head
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Subacromial space
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-1cm in height
-supraspinatus -subacromial bursa -long head of the biceps -part of the superior capsule of the glenohumeral joint -improper posture decreases the subacromial space -head of the humerus has to slide inferiorly during rotation so as to not completely impinge on it |
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Subacromial impingement syndrome
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-caused by decreased height under the acromion
-shoulder pain that is aggravated by repetitive overhead activities -pain in anterior and superior part of the shoulder -pain esp. at night |
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Treatment of subacromial impingement syndrome
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-modification of sport or work
-rest -treatment of tendinosis and muscles -stretching of short muscles -stabilisation of scapula with exercises -better overall posture |
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Tendinosis
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-occurs when scar tissue doesn't specialize to become muscle or tendon tissue
-chronic injuries (step 1- inflammation; step 2- scar tissue; step 3- scar tissue becomes muscle or tendon) |
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Scapulohumeral rhythm
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-2:1 (double the amount of motion that happens at the glenohumeral vs. scapulothoracic)
-after 30 deg. of abduction -for every 3 deg. of abduction of the shoulder, there are 2 deg. of rotation of the glenohumeral joint and 1 degree of superior rotation of the scapulothoracic joint |
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Levator Scapula
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-elevation of the scapula
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Rhomboid major and minor
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-retraction and rotation of the scapula
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Trapezius
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-elevation and superior rotation of the scapula
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Latissimus Dorsi
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-attaches from T6 down to sacrum and front of shoulder in between two tubercles
-internal rotation, extension, and adduction of glenohumeral joint |
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Pectoralis major
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-attaches to greater tubercle
-internal rotation, extension, and adduction of glenohumeral joint |
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Pectoralis minor
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-attaches to coracoid process
-protraction, depression, and inferior rotation of the scapula |
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Subclavius
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-depression of the scapula
-protects sternoclavicular joint -so small that it doesn't really affect much |
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Serratus Anterior
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-main protractor of the scapula
-very important muscle in terms of shoulder rehab |
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Deltoid
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anterior part: internal rotation, flexion, abduction of the glenohumeral joint
posterior part: extension and adduction of the glenohumeral joint |
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Coracobrachialis
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-attaches to coracoid process
-flexion of glenohumeral joint |
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Biceps brachii
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-short head attaches to coracoid process
-short head: flexion of glenohumeral joint -long head: flexion of glenohumeral joint |
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Supraspinatus
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-rotator cuff muscle
-attaches to greater tubercle -flexion and abduction of the scapula |
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Infraspinatus
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-rotator cuff muscle
-attaches to greater tubercle -external rotation |
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Teres minor
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-rotator cuff muscle
-attaches to greater tubercle -lateral rotation -sits right above trees major |
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Teres major
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-NOT a rotator cuff muscle
-attaches to lesser tubercle -extension and adduction of glenohumeral joint |
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Subscapularis
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-rotator cuff muscle
-attaches to lesser tubercle |
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Triceps Brachii
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-extension and adduction of glenohumeral joint
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Ahesive capsulitis acute phase
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-aka frozen shoulder
-patient usually >40 -moderate pain that limits movements in all direction -no trauma -interferes with sleep |
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Adhesive capsulitis post-acute phase
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-1-3 months after
-pain and range of motion are decreased |
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Adhesive capsulitis chronic phase
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-rang of motion returns slowly
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Labral tears
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-deep, sharp pain in the front of the shoulder
-symptoms are usually vague and hard to locate -surgery is common |
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Anterior/inferior dislocation of the shoulder
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-most common dislocation
-usually due to forced abduction, external rotation and extension that focus the humeral head out of the glenoid cavity -acromion is prominent and the head of the humerus is in an anterior/inferior location -may fracture the greater tuberosity and affect the nerves |
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Scapular Dyskinesis (etiology)
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-abnormal movement of the scapula due to repetitive use
(SICK) -Scapular malposition -Inferior medial scapular winging -Coracoid tenderness -Kinesis abnormalities of the scapula |
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Scapular Dyskinesis (Symptoms)
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-holds the affected shoulder lower and rotated forward (slouched)
-inferior medial border of the scapula tends to be prominent -decreases height of subacromial space |
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Scapular Dyskinesis (muscles affected)
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-short: pec major an minor
-inhibited: serratus anterior, interior trapezius |
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Upper cross syndrome (short muscles)
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-pec major and minor
-levator scapulae -suboccipitals -upper trapezius -sternocleidomastoid -latissimus dorsi |
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Upper cross syndrome (inhibited muscles)
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-middle and inferior trapezius
-deep neck flexors -serratus anterior -rhoimboids |
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Scapulothoracic Elevators
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-upper trapezius
-levator scapula -rhomboids |
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scapulothoracic depressors
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-lower trapezius
-latissimus dorsi -pectoralis minor -subclavius |
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Scapulothoracic retractors
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-middle trapezius
-rhomboids -lower trapezius |
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Scapulothoracic protractor
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-serratus anterior
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Scapulothoracic upwards rotators
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-serratus anterior
-upper and lower trapezius |
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Scapulothoracic downward rotators
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-rhomboids
-pec minor |
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Muscles responsible for raising the arm
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Glenohumeral muscles:
-Anterior and Middle Deltoid -Supraspinatus -Coracobrachialis -Biceps (long head) Scapulothoracic muscles: -Serratus Anterior -Trapezius Rotator Cuff: -Supraspinatus -Infraspinatus -Teres Minor -Subscapularis |
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Adduction and extension of the shoulder
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-posterior deltoid
-latissimus dorsi -teres major -triceps -pec major -rhomboids |
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Internal rotators of the shoulder
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-subscapularis
-anterior deltoid -pec major -latissimus dorsi -teres major |
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External rotators of the shoulder
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-infraspinatus
-teres minor -posterior deltoid |