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257 Cards in this Set

  • Front
  • Back
What are the bones of the talocural (ankle) joint?
tibia, fibula, talus
tibia, fibula, talus
Bones of the foot (superior). Excludes toes.
Bones of the foot (superior). Toes.
Bones of the foot (medial).
Bones of the foot (lateral).
Ligaments of the ankle (medial).
Ligaments of the ankle (lateral).
Pronation is a combination of:
Eversion, abduction, dorsiflexion
Supination is a combination of:
inversion, adduction, plantar flexion
What is the most common injury in physically active people?
Ankle sprains.
What is the most common type of ankle sprain?
Inversion combined with plantar flexion
What are the most commonly injured ligaments in a plantar flexion and inversion sprain?
anterior talofibular, calcaneofibular, posterior talofibular, anterior and posterior tibiofibular.
What is the most commonly injured ligaments in an inversion sprain?
Calcaneofibular ligament
What are the most commonly injured ligaments in a dorsiflexion sprain?
anterior and posterior tibiofibular ligaments
What are the most commonly injured ligaments in an eversion sprain?
Deltoid ligaments, anterior and posterior tibiofibular ligaments (when it is a severe sprain), interosseous membrane (with an increase in the external rotation)
What ligament is most often affected in inversion ankle sprains?
Anterior talofibular
What decreases the likelihood of eversion injuries?
Bone protection and strength of the delltoid ligament
What movement causes a distal tibiofibular sprain?
External rotation or forced dorsiflexion.
Osteochondritis dissecans
Injury to the cartilage or cartilage/ subchondral bone in which a bone fragment can be partially or completely detached.
When does an ankle affected with osteochondritis dissecans appear to lock with movement?
When the bone fragment moves into the joint.
Symptoms of Osteochondritis dissecans
-chronic ankle pain
-intermittent swelling of the ankle
Medial capsular ligament
Metatarsalgia
-pain in the foot between 2nd and 3rd metatarsal head
-lowered transverse arch
-pain in the foot between 2nd and 3rd metatarsal head
-lowered transverse arch
Treatment of Metatarsalgia
Place metatarsal cushion in shoes
Place metatarsal cushion in shoes
Toe sprain
-caused by kicking an object
-sprain of joint capsule and ligaments
Pain and symptoms in toe sprains
-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
Hyperextension of big toe (Turf toe)
-results in a sprain
-swelling and pain that increase during the push phase
Hallux Valgus (common name)
Bunion
Hallux Valgus (description)
-exostosis on first metatarsal head
-inflammation, lateral deviation of big toe
-degenerative process (osteoarthritis)
-pain when walking
-exostosis on first metatarsal head
-inflammation, lateral deviation of big toe
-degenerative process (osteoarthritis)
-pain when walking
Hallux Vagus treatment
-orthotics to correct biomechanics problems and prevent progression
-surgery
Hallux Rigidus
-development of osteophytes on dorsal part of the first metatarsalphalangeal joint
-loss of dorsiflexion 
-degenerative process
-change in biomechanics of walking
-development of osteophytes on dorsal part of the first metatarsalphalangeal joint
-loss of dorsiflexion
-degenerative process
-change in biomechanics of walking
Halluz rigidus treatment
-orthotics to correct biomechanics
-surgery in some cases
Tibialis anterior
Dorsiflexion and inversion of the foot
Dorsiflexion and inversion of the foot
Extensor Digitorum Longus
-Attaches to medial surface of fibula
-Extension of toes and dorsiflexion of ankle
-tendon splits to attach to 2-5 phalanges
-Attaches to medial surface of fibula
-Extension of toes and dorsiflexion of ankle
-tendon splits to attach to 2-5 phalanges
Extensor Hallucis Longus
-Attaches to medial surface of fibula
-tendon extends to big toe
-dorsiflexion, inversion, eversion
-Attaches to medial surface of fibula
-tendon extends to big toe
-dorsiflexion, inversion, eversion
Fibularis Longus
-Attaches to proximal head of fibula
-eversion and plantar flexion
-Attaches to proximal head of fibula
-eversion and plantar flexion
Fibularis Brevis
-attaches to distal 2/3 of lateral surface of fibula
-eversion and plantar flexion
-attaches to distal 2/3 of lateral surface of fibula
-eversion and plantar flexion
Fibularis Tertius
--attaches to distal 1/3 of media surface of fibula
-eversion and dorsiflexion
Tibialis Posterior
-attaches to head of fibula
-inversion and plantar flexion
-attaches to head of fibula
-inversion and plantar flexion
Flexor Digitorum Longus
-sits medial+anterior to tibialis posterior
-flexion of phalanges 2-5
-sits medial+anterior to tibialis posterior
-flexion of phalanges 2-5
Flexor Hallucis Longus
-flexion of big toe
-plantar flexion
-flexion of big toe
-plantar flexion
Gastrocnemius
-causes bulge in calf
-plantar flexion
-knee flexion
-attaches to Achilles tendon
-causes bulge in calf
-plantar flexion
-knee flexion
-attaches to Achilles tendon
Soleus
-attaches to head of fibula
-involved in walking
-plantar flexion
-attaches to head of fibula
-involved in walking
-plantar flexion
Plataris
-plantar flexion
-knee flexion
-plantar flexion
-knee flexion
Function of the Anterior Compartment
Dorsiflexion
Muslces of the Anterior Compartment
-Tibialis Anterior
-Extensor Digitorum Longus
-Extensor Hallucis Longus
-Fibularis Tertius
-Tibialis Anterior
-Extensor Digitorum Longus
-Extensor Hallucis Longus
-Fibularis Tertius
Nerves of the Anterior Compartment
Deep branch of fibular nerve
Deep branch of fibular nerve
Function of the Lateral Compartment
Eversion
Muscles of the Lateral Compartment
Fibularis Longus and Brevis
Fibularis Longus and Brevis
Nerves of the Lateral Compartment
Superficial Fibular Nerve
Superficial Fibular Nerve
Function of the Superficial Posterior Compartment
Plantar Flexion
Muscles of the Superficial Posterior Compartment
-Gastrocnemius
-Soleus
-Plantaris
-Gastrocnemius
-Soleus
-Plantaris
Nerves of Superficial Posterior Compartment
None
Function of the Deep Posterior Compartment
Inversion
Muscles of the Deep Posterior Compartment
-Tibalis Posterior
Flexor Digitorum Longus
-Flexor Hallucis Longus
-Tibalis Posterior
Flexor Digitorum Longus
-Flexor Hallucis Longus
Nerves of the Deep Posterior Compartment
-Tibial Nerve
Compartment Syndrome
Increased pressure within one of the four leg compartments
Acute Compartment syndrome
-occurs due to direct trauma
-medical emergency
Chronic compartment syndrome
symptoms occur with activities always around the same time/distance
Signs and symptoms of compartment syndrome
-deep and throbbing pain, localized in the involved compartment
-numbness if pressure is large enough to compress nerve
Achilles Tendinopathy
-pain and stiffness in middle of Achilles
-palpable nodule on tendon
-usually no inflammation
-failed response to healing/ degeneration of tendon
-overuse injury
Components involved in Tarsal Tunnel Syndrome
Tibialis posterior, flexor hallucis longus, flexor digitorum longus, tibial nerve, tibial artery, tibial vein
Tarsal Tunnel Syndrome
-Area behind the medial malleolus
-pain and parenthesis along the medial and plantar foot
-muscle weakness
-compression of the structures inside the tunnel
Plantar fasciitis
-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
Innominate (coxal) bone
union of the ilium, ischium, pubis
Factors affecting the shape and configuration of the proximal femur
-bone's ossification centres
-force of muscle contraction
-weight bearing
-blood circulation
Femoral dysplasia
-abnormal growth and development resulting in misshaped proximal femur
Angle of Inclination
-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
Angle of inclination at birth
140-150
Angle of inclination in adults
125 degrees
Coxa Vara
angle markedly less than 125 degrees
angle markedly less than 125 degrees
Coxa Valga
angles markedly above 125 degrees
angles markedly above 125 degrees
Femoral torsion
-angle between the head of the femur relative to the femoral condyle
-allows optimal alignment of the articular surfaces
Normal anteversion
-head of the femur is rotated 15 degrees anterior relative to the condyle
-head of the femur is rotated 15 degrees anterior relative to the condyle
Excessive anteversion
-Markedly more than 15 degrees
-in children, it brings the child to walk with toes pointed inward
Retroversion
markedly less than 15 degrees
Femoral torsion at birth
40 degrees
Acetabular labrum
-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)
-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)
Injury and degeneration of the labrum
-may be acute but often overuse
-tear usually located anterior/superior portion of the labrum
Symptoms of injury and degeneration of the labrum of the hip
-often asymptomatic, but may click, lock
-limited range in motion
-pain in the groin and anterior part of the hip
-difficult to diagnose clinically
Ligaments reinforcing the articular capsule
-Iliofemoral
-pubeform
-ischiofemoral
-Iliofemoral
-pubeform
-ischiofemoral
Sagittal plane rotation
-slack iliofemoral ligament
-slack iliofemoral ligament
Frontal plane rotation
horizontal plane rotation
Anterior/exterior pelvic tilt
Anterior and medial muscles that originate on pelvis or spine
-Iliopsoas (iliacus and psoas major)
-sartorius
-tenor fascia latae
Psoas Major
-attaches to lesser trochanter
-flexion and lateral rotation of the thigh
-attaches to lesser trochanter
-flexion and lateral rotation of the thigh
Iliacus
-attaches to lesser trochanter
-flexion and lateral rotation of the thigh
-attaches to lesser trochanter
-flexion and lateral rotation of the thigh
Sartorius
-flexion, abduction, lateral rotation of hip
-flexion of knee
-flexion, abduction, lateral rotation of hip
-flexion of knee
Tensor fasciae latae
-flexion, medial rotation, abduction of the thigh
-stabilizes trunk
-flexion, medial rotation, abduction of the thigh
-stabilizes trunk
Muscles of the medial compartment of the thigh
-adductor magnus
-adductor longus
-adductor brevis
-pectineus
-gracilis
Adductor magnus
-adduction and flexion of hip
-adduction and flexion of hip
Adductor longus
--adduction and flexion of the hip
--adduction and flexion of the hip
Adductor brevis
-adduction of the hip
-adduction of the hip
Pectineus
-adduction and flexion of the hip
-adduction and flexion of the hip
Gracilis
-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
-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
Gluteal muscles
-gluteus maximus
-gluteus medius
-gluteus minimus
Gluteus maximus
-external rotation and extension
-
-external rotation and extension
-
Gluteus medius
-hip abduction
-resists hip adduction
-hip abduction
-resists hip adduction
Gluteus minimus
-attaches to greater trochanter
-abduction of the hip
-prevents hip adduction
-attaches to greater trochanter
-abduction of the hip
-prevents hip adduction
Lateral rotators
-piriformis
-obturator externus
-obturator internus
-gemellus
-quadratus femoris
Piriformis
-greater trochanter
-external rotation of the thigh
-greater trochanter
-external rotation of the thigh
Gemellus inferior
-attaches to ischial tuberosity
-lateral rotation of thigh
-attaches to ischial tuberosity
-lateral rotation of thigh
Gemellus superior
-lateral rotation of the thigh
-lateral rotation of the thigh
Quadratus femoris
-attaches at ischial tuberosity
-lateral rotation and adduction of the thigh
-attaches at ischial tuberosity
-lateral rotation and adduction of the thigh
Obturator internus
-attaches to greater trochanter
-abduction and external rotation of the thigh
-stabilizes hip
-attaches to greater trochanter
-abduction and external rotation of the thigh
-stabilizes hip
Obturator externus
-attaches to greater trochanter
-adduction and lateral rotation of the thigh
-attaches to greater trochanter
-adduction and lateral rotation of the thigh
Muscles of posterior compartment
-hamstring (biceps femoris, semitendinosus, semimembranosis)
Long head of the biceps femoris
-attaches to ischial tuberosity and head of the fibula
-extension of hip
-flexion and lateral rotation of knee
Muscles of posterior compartment
-attaches to ischial tuberosity and head of the fibula
-extension of hip
-flexion and lateral rotation of knee
Muscles of posterior compartment
Short head of biceps femoris
-attaches at head of the fibula
-extension of hip
-flexion and lateral rotation of knee
Muscles of posterior compartment
-attaches at head of the fibula
-extension of hip
-flexion and lateral rotation of knee
Muscles of posterior compartment
Semimembranosus
-attaches at ischial tuberosity
-extension of the hip
-flexion of the knee
Muscles of posterior compartment
-attaches at ischial tuberosity
-extension of the hip
-flexion of the knee
Muscles of posterior compartment
Semitendinosus
-attaches to ischial tuberosity
-knee flexion
-hip extension
Muscles of posterior compartment
Muscles of the anterior compartment of the thigh
-quadriceps femoris (rectus femoris, vastus lateralis, vastus medialis, vastus intermedius)
rectus femoris
-knee extension
-hip flexion
Muscles of the anterior compartment of the thigh
-knee extension
-hip flexion
Muscles of the anterior compartment of the thigh
vastus intermedius
-knee extension
Muscles of the anterior compartment of the thigh
-knee extension
Muscles of the anterior compartment of the thigh
Vastus lateralis
-attaches to greater trochanter
-extends and stabilizes knee
Muscles of the anterior compartment of the thigh
-attaches to greater trochanter
-extends and stabilizes knee
Muscles of the anterior compartment of the thigh
Vastus medialis
-knee extension
Muscles of the anterior compartment of the thigh
-knee extension
Muscles of the anterior compartment of the thigh
Primary hip flexors
-iliopsoas
-sartorius
-tensor fasciae latae
-rectus femoris
-adductor longus
-pectineus
Secondary hip flexors
-adductor brevis
-gracilis
-anterior part of gluteus minimus
Rectus abdominus as stabilizer
-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
-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
Primary hip extensors
-gluteus maximus
-hamstring (except short head of the biceps)
-posterior head of adductor magnus
Secondary extensors of the hip
-posterior part of gluteus medius
-anterior head of adductor magnus
Primary adductors of the hip
-pectineus
-adductor longus
-gracilis
-adductor brevis
-addcutor magnus
Secondary adductors of the hip
-biceps femoris
-gluteus maximus
-quadratus femoris
Primary hip abductors
-gluteus medius
-gluteus minimus
-tensor fasciae latae
Secondary hip abductors
-piriformis
-sartorius
Primary internal rotators of the hip
-none in the anatomical position
Secondary internal rotators of the hip
-anterior part of gluteus medius and minimus
-tensor fasciaea latae
-adductor longus
-adductor brevis
-pectineus
Primary external rotators of the hip
-gluteus maximus
-piriformis
-gemellus inferor
-quadratus femoris
-obturator internus
Secondary external rotators of the hip
-posterior part of gluteus medius
-posterior part of gluteus minimus
-obturator externus
-sartorius
-long head of biceps femoris
Causes of hip abductor weakness
-neurological disorders
-arthritis
-post-surgery
-chronic hip injury
-postural change
Trendelenburg's Sign
Hip fractures
-95% as a result of a fall
Mortality rate after hip fracture (within 1 year)
12-25%
Osteoarthritis of the hip (description)
-deterioration of articular cartilage
-decreased joint space
-sclerosis of the subchondral bone
-presence of osteophytes
-deterioration of articular cartilage
-decreased joint space
-sclerosis of the subchondral bone
-presence of osteophytes
Osteoarthritis of the hip (symptoms)
-atrophy and weakness of hip muscles
-stiffness in the morning
-altered gait
Hip dysplasia
-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
Avascular necrosis (AVN) of femoral head (etiology)
-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...
-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
AVN (signs and symptoms)
-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
AVN (management)
-diagnosed via radiology/ MRI/ CT
work to improve the use of the joint, but prevent further damage
-usually surgical
Legg-Calvé-Perthes disease (etiology)
-AVN of the femoral head in children 4-10 years
-caused by trauma in 25% of cases
-articular cartilage becomes necrotic and flattens
Legg-Calvé-Perthes disease (signs and symptoms)
-pain in groin, which can radiate to abdomen or knee
-limping
-possible limited range of motion
Legg-Calvé-Perthes disease (management)
-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
Legg-Calvé-Perthes disease (complications)
-if not treated quickly, femoral head may be deformed and osteoarthritis may develop later in life
Slipped capital femoral epiphysis (etiology)
-found mainly in boys aged 10-17
-may be linked to GH
-occurs in both hips in 25% of cases
-25% caused by trauma
Slipped capital femoral epiphysis (signs and symptoms
-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
Slipped capital femoral epiphysis (management)
-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
Snapping hip (etiology)
-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
Snapping hip (symptoms)
-popping sound, with or without pain
snapping hip (management)
-reduce pain and inflammation
-correction of biomechanical problems
Osteitis pubis (eiology)
-distance runners, soccer, football, wrestling
-repetitive stress of pubic symphysis and to the muscles that attach near it
Osteitis pubis (symptoms)
-chronic pain and inflammation of the groin
-sensitivity at the pubic tubercle
-pain during running, sit ups, and squates
Osteitis pubis (management)
-rest and gradual return to activity
How many of the muscles that cross the knee will also cross the hip or ankle?
2/3
How is knee stability provided?
By the soft tissues, and NOT the configuration of the bones
Patella
Genu valgum
-angle between the femur and the tibia
-normally 170-175 degrees
-femur sits at125 degree angle to the longitudinal axis of rotation
-angle between the femur and the tibia
-normally 170-175 degrees
-femur sits at125 degree angle to the longitudinal axis of rotation
Excessive genu valgum
"knock-knee"
<165 degrees
"knock-knee"
<165 degrees
genu varum
"bow-leg"
>180 degrees
"bow-leg"
>180 degrees
Gastrocnemius
-knee flexion
-knee flexion
Muscles responsible for flexion and internal rotation of the knee
Sartorius, gracilis, popliteus, semimembranosus and semitendinosus, biceps femoris
Quadriceps
-extension of the knee
Miniscus
-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...
-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
Meniscus tear
-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
Meniscus tear (knee)
-occurs due to forced rotation with flexed foot and knee planted
-most often in medial
-occurs due to forced rotation with flexed foot and knee planted
-most often in medial
Types of meniscal tears
Deep structures of the knee
Menisci, ACL, LCL, PCL, PML
Menisci, ACL, LCL, PCL, PML
Medial collateral ligament
-resists valgus forces
-resits knee extension
-resists extreme rotation of the knee
-resists valgus forces
-resits knee extension
-resists extreme rotation of the knee
Sprain of the medial collateral ligament
-occurs due to valgus force with the foot planted (hyperextension of the knee)
-occurs due to valgus force with the foot planted (hyperextension of the knee)
Lateral collateral ligament
-resists varus forces
-resists knee extension
-resists extreme knee rotation
-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)
-occurs due to varus force with the foot planted (hyperextension of the knee)
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
-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
-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
-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
-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
-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
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
-very unstable
-muscles are necessary for stability
Ligaments and muscles that attach to the Coracoid Process
Muscles that attach to the lesser tubercle
Subscapularis
Subscapularis
Muscles that attach to the greater tubercle
Supraspinatus, Infraspinatus, Teres Minor, pectoralis major
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
Joints of the shoulder complex
-glenohumeral
-scapulothoracic
-acromioclavicular
-sternoclavicular
-glenohumeral
-scapulothoracic
-acromioclavicular
-sternoclavicular
Movements of the scapulothoracic joint
Ligaments of the sternoclavicular joint
Movement of the sternoclavicular joint
Ligaments of the acromioclavicular joint
Which ligament is the first to be sprained in the acromioclavicular joint?
Acromioclavicular ligament
Acromioclavicular ligament
What movement would cause the conoid and trapezoid ligaments to be down?
Pushing down on the scapula at the acromion
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
-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
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
Combination of protraction at the sternoclavicular joint and slight internal rotation at the acromioclavicular joint
Upward rotation of the scapulothoracic joint
Combination of elevation of the sternoclavicular joint and upward rotation of the acromioclavicular joint
Combination of elevation of the sternoclavicular joint and upward rotation of the acromioclavicular joint
Glenohumeral joint
Joint capsule of the glenohumeral joint
-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
Stability to the glenohumeral joint
-coracohumeral and capsular ligaments
-rotator cuff and long head of the biceps
-coracohumeral and capsular ligaments
-rotator cuff and long head of the biceps
Rotator cuff
-supraspinatus
-infraspinaturs
-teres minor
-subscapularis
-protects and stabilizes the glenohumeral  by preventing the humerus from sliding forward
-supraspinatus
-infraspinaturs
-teres minor
-subscapularis
-protects and stabilizes the glenohumeral by preventing the humerus from sliding forward
Long head of the biceps
-restricts anterior translation of the humeral head
-restricts anterior translation of the humeral head
Subacromial space
-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 ...
-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
Subacromial impingement syndrome
-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
Treatment of subacromial impingement syndrome
-modification of sport or work
-rest
-treatment of tendinosis and muscles
-stretching of short muscles
-stabilisation of scapula with exercises
-better overall posture
Tendinosis
-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)
Scapulohumeral rhythm
-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 r...
-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
Levator Scapula
-elevation of the scapula
-elevation of the scapula
Rhomboid major and minor
-retraction and rotation of the scapula
-retraction and rotation of the scapula
Trapezius
-elevation and superior rotation of the scapula
-elevation and superior rotation of the scapula
Latissimus Dorsi
-attaches from T6 down to sacrum and front of shoulder in between two tubercles
-internal rotation, extension, and adduction of glenohumeral joint
-attaches from T6 down to sacrum and front of shoulder in between two tubercles
-internal rotation, extension, and adduction of glenohumeral joint
Pectoralis major
-attaches to greater tubercle
-internal rotation, extension, and adduction of glenohumeral joint
-attaches to greater tubercle
-internal rotation, extension, and adduction of glenohumeral joint
Pectoralis minor
-attaches to coracoid process
-protraction, depression, and inferior rotation of the scapula
-attaches to coracoid process
-protraction, depression, and inferior rotation of the scapula
Subclavius
-depression of the scapula
-protects sternoclavicular joint
-so small that it doesn't really affect much
-depression of the scapula
-protects sternoclavicular joint
-so small that it doesn't really affect much
Serratus Anterior
-main protractor of the scapula
-very important muscle in terms of shoulder rehab
-main protractor of the scapula
-very important muscle in terms of shoulder rehab
Deltoid
anterior part: internal rotation, flexion, abduction of the glenohumeral joint
posterior part: extension and adduction of the glenohumeral joint
anterior part: internal rotation, flexion, abduction of the glenohumeral joint
posterior part: extension and adduction of the glenohumeral joint
Coracobrachialis
-attaches to coracoid process
-flexion of glenohumeral joint
-attaches to coracoid process
-flexion of glenohumeral joint
Biceps brachii
-short head attaches to coracoid process
-short head: flexion of glenohumeral joint
-long head: flexion of glenohumeral joint
-short head attaches to coracoid process
-short head: flexion of glenohumeral joint
-long head: flexion of glenohumeral joint
Supraspinatus
-rotator cuff muscle
-attaches to greater tubercle
-flexion and abduction of the scapula
-rotator cuff muscle
-attaches to greater tubercle
-flexion and abduction of the scapula
Infraspinatus
-rotator cuff muscle
-attaches to greater tubercle
-external rotation
Teres minor
-rotator cuff muscle
-attaches to greater tubercle
-lateral rotation
-sits right above trees major
-rotator cuff muscle
-attaches to greater tubercle
-lateral rotation
-sits right above trees major
Teres major
-NOT a rotator cuff muscle
-attaches to lesser tubercle
-extension and adduction of glenohumeral joint
-NOT a rotator cuff muscle
-attaches to lesser tubercle
-extension and adduction of glenohumeral joint
Subscapularis
-rotator cuff muscle
-attaches to lesser tubercle
-rotator cuff muscle
-attaches to lesser tubercle
Triceps Brachii
-extension and adduction of glenohumeral joint
-extension and adduction of glenohumeral joint
Ahesive capsulitis acute phase
-aka frozen shoulder
-patient usually >40
-moderate pain that limits movements in all direction
-no trauma
-interferes with sleep
Adhesive capsulitis post-acute phase
-1-3 months after
-pain and range of motion are decreased
Adhesive capsulitis chronic phase
-rang of motion returns slowly
Labral tears
-deep, sharp pain in the front of the shoulder
-symptoms are usually vague and hard to locate
-surgery is common
Anterior/inferior dislocation of the shoulder
-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
Scapular Dyskinesis (etiology)
-abnormal movement of the scapula due to repetitive use
(SICK)
-Scapular malposition
-Inferior medial scapular winging
-Coracoid tenderness
-Kinesis abnormalities of the scapula
Scapular Dyskinesis (Symptoms)
-holds the affected shoulder lower and rotated forward (slouched)
-inferior medial border of the scapula tends to be prominent
-decreases height of subacromial space
-holds the affected shoulder lower and rotated forward (slouched)
-inferior medial border of the scapula tends to be prominent
-decreases height of subacromial space
Scapular Dyskinesis (muscles affected)
-short: pec major an minor
-inhibited: serratus anterior, interior trapezius
-short: pec major an minor
-inhibited: serratus anterior, interior trapezius
Upper cross syndrome (short muscles)
-pec major and minor
-levator scapulae
-suboccipitals
-upper trapezius
-sternocleidomastoid
-latissimus dorsi
Upper cross syndrome (inhibited muscles)
-middle and inferior trapezius
-deep neck flexors
-serratus anterior
-rhoimboids
Scapulothoracic Elevators
-upper trapezius
-levator scapula
-rhomboids
scapulothoracic depressors
-lower trapezius
-latissimus dorsi
-pectoralis minor
-subclavius
Scapulothoracic retractors
-middle trapezius
-rhomboids
-lower trapezius
Scapulothoracic protractor
-serratus anterior
Scapulothoracic upwards rotators
-serratus anterior
-upper and lower trapezius
Scapulothoracic downward rotators
-rhomboids
-pec minor
Muscles responsible for raising the arm
Glenohumeral muscles:
-Anterior and Middle Deltoid
-Supraspinatus
-Coracobrachialis
-Biceps (long head)
Scapulothoracic muscles:
-Serratus Anterior
-Trapezius
Rotator Cuff:
-Supraspinatus
-Infraspinatus
-Teres Minor
-Subscapularis
Adduction and extension of the shoulder
-posterior deltoid
-latissimus dorsi
-teres major
-triceps
-pec major
-rhomboids
Internal rotators of the shoulder
-subscapularis
-anterior deltoid
-pec major
-latissimus dorsi
-teres major
External rotators of the shoulder
-infraspinatus
-teres minor
-posterior deltoid