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89 Cards in this Set
- Front
- Back
Which femoral condyle is C shaped?
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Medial
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Which femoral condyle is more rounded?
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Lateral
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What is the joint classification of the knee?
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Synovial Hinge Joint
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What is A?
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Femoral Condyles
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What is B?
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Tibial Pateau
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The distal femur is _________ medial to lateral and _________ superior to inferior.
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Concave
Convex |
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Which condyle is larger and longer?
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Medial
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What are the two layers of the knee joint capsule?
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Fibrous
Synovial |
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What are characteristics of hyaline cartilage at the knee joint?
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Very thick on femur and tibia
Improved congruency due to compliance Improved ability to handle large forces |
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Which meniscus is attached to the MCL?
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Medial
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Which meniscus is less movable and therefore more frequently injured?
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Medial
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Which meniscus is attached to the popliteus?
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Lateral
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What are some examples of foam roll and Static Stretch Techniques for feet turning out?
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Gastrocnemius / Soleus
Bicept Femoris (short head) |
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What are the two main pairs of ligaments?
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ACL/PCL
MCL/LCL |
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What motion does the ACL prevent?
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Anterior translation of the tibia (tightest in extension)
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What motion does the PCL prevent?
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Posterior translation of the tibia (tight during flexion)
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What is the function of the MCL?
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Provides frontal plane stability
Resists valgus forces |
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What is the function of the LCL?
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Resists varus forces and lateral rotation?
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What are functions and characteristics of the fat fad?
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Protect anterior knee joint structures
Moves anterior with extension, moves posterior with flexion Highly innervated Can be very painful |
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What is the tendency for rotation called?
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Version
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What is the normal version of the foot in the transverse plane?
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0 Degrees
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What is the normal tilt of the patella at rest?
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Slight lateral titl
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What is the open pack position of the knee?
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25 Degrees Flexion
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What is the closed pack position of the knee?
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Full Extension
Tibial External Rotation |
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What is the capsular pattern of the knee?
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Flexion > Extension
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What is normal end feel at the knee in flexion? Extension?
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Flexion- Soft
Extension- Firm |
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Name the normal ROM at the knee for the following:
Flexion/Extension Lateral Rotation Abduction |
Flexion/Extension- 140 Degrees
Lateral Rotation- 20 Degrees Abduction- 5 Degrees |
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How many degrees of freedom does the knee have?
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6
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Which bone of the knee is concave? Convex?
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Concave- Tibia
Convex- Femur |
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If motion occurs in the sagittal plane, what direction does the roll occur in?
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Anterior/Posterior
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If motion occurs in the frontal plane, what direction does the roll occur in?
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Superior/Inferior
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What is the purpose of the patella?
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Increase the moment arm or mechanical advantage of the quadriceps
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How much does the patella translate on the femur?
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5-6 cm
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What are the influences of the Q angle on the knee?
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The greater Q angle puts a larger medial stress on the knee and puts more stress on the ACL. If we have our knee in CKC, we put less shear force on the knee
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Which structure pulls on the suprapatellar pouch?
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Articularis Genu
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What is the screw home mechanism?
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Towards the end of knee flexion, the tibia medially rotates by way of the popliteus muscles.
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Which muscles initiates flexion of the knee?
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Popliteus
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Which muscles cause internal rotation of the knee?
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Semimembranosis
Semitendonosis Sartorius Gracilis |
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Which muscles cause external rotation of the knee?
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TFL
Biceps Femoris |
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What is the mid range where the body is able to generate the most amount of force at the knee when performing knee extension?
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50-80 Degrees
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During free weights, the peak quad force is at which position?
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Full extension
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When dealing with pullies, constant force-magnitudes is dependent on what?
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External Force
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During CKC, force increases with what?
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Knee Flexion
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During isokinetic motion, peak force is attained at what range?
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Mid range
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Forced generated at the knee can reach how how?
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9 times body weight
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Walking causes how much force at the tibiofemoral joint? Jogging?
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3x BW
12x BW |
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During knee flexion, which direction does the patella move?
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Distally
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What mechanisms help prevent lateral trackining?
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Large lateral condyle superiorly
Medial extensor retinaculum VMO |
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Compressive and shear forces range from body weight with level walking to over 1100 lb while doing what?
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Running
Jumping |
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Increased Flexion = ?
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Increase Compression
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The dome of the talus from anterior-posterior is _____, while from medial-lateral is ______.
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A-P: convex
M-L: concave |
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The posterior facet of the calcaneous articulates with which structure?
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Talus
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Why is it important that the calcaneous is trabecular bone?
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It allows for shock absorption
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What are the keystones for the transverse arch of the foot?
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Cuneiform bones
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Which structures in the foot work as functional motion segment, often referred to as Rays?
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Metatarsal and phalanges
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What does the hindfoot include?
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Calcaneus
Talus |
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What is included in the midfoot?
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Cuneiform
Navicular Cuboid |
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What is included in the forefoot?
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Metatarsals
Phalanges |
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What are the 3 main functions of the ankle?
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Shock absorption
Adapt WB activity to uneven ground Stable BOS for mobility |
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What are motions at the ankle (tarsal)?
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Plantar Flexion
Dorsiflexion Inversion Eversion Adduction Abduction |
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Which joint is considered the proper ankle joint?
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Talocrural
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Varus position at the foot has the foot pointed _______. Valgus is pointed ______.
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Varus: inward
Valgus: outward |
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Which joint is referred to as the mortise joint?
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Talocrural
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What is normal plantar flexion and dorsiflexion of the foot?
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Plantar Flexion: 35-50 degrees
Dorsiflexion: 20 degrees |
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The axis of motion at the ankle during plantar flexion and dorsiflexion is what?
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From medial to lateral malleolus
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Motion at the talocrural joint is considered _______.
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Triplanar
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What is the resting position of the ankle?
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10 degree plantar flexion, midway between inversion and eversion
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What is the closed pack position of the ankle?
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Maximum dorsiflexion
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When considering capsular pattern at the ankle, plantar flexion is ______ limited than dorsiflexion.
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More
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What motion does the ATFL limit?
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Anterior glide of the talus
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Is the lateral ligament stronger or weaker than the medial ligament?
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Weaker
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What are characteristics of the deltoid ligament?
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Medial
Strong Medial malleolus to talus, calcaneus, and navicular Stabilizes during eversion |
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Which ligament stabilizes the ankle during eversion?
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Deltoid
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Which bones comprise the subtalar joint?
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Talus
Calcaneus |
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What type of joint is the subtalar? How many joint capsules?
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Synovial Joint
Two joint capsules (ant/post) |
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What is normal inversion and eversion of the foot?
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Inversion: 20 degrees
Eversion: 10 degrees |
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Which motion at the ankle is directed medial-superior? Lateral-inferior?
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Medial-superior: Inversion
Lateral-inferior: Eversion |
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Which joint is referred to as the spring ligament of the talar head?
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Talonavicular joint
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DF/PF occur at which joint?
INV/EV? PRON/SUP? |
DF/PF: Talocrural
INV/EV: Subtalar and Transverse Tarsal PRON/SUP: All together |
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Which motions occur at the MTP joints?
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Flexion
Extension Abduction Adduction |
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MTP 1 joint has how much ROM?
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Flexion: 30-45 degrees
Extension: 50-70 degrees |
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How many degrees of freedom does the MTP joint have?
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2
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What is the ROM of the IP joint of the hallux?
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0-30 degrees
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What are functions of the plantar fascia?
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Maintain shape of foot
Support/stabilize skin and plantar surface of foot joints Dynamic in gait-stabilization of foot for pushing off the ground as it bears the weight of the body and is pulled taut |
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What is the joint arthrokinematics of the subtalar joint?
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Posterior part of the joint-view as concave talus moving on convex calcaneous
Anterior part-View as slightly convex talus moving on concave calcaneous |
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What are the arthrokinematics of the talocrural joint?
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Talus: Ant-Post: Convex
Talus: Med-Lat: Concave and Convex |
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What condition has a high arch, is fairly rigid, and often is involved joint/bony injuries?
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Pes Cavus
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What condition is associated with flat foot, tends to be hypermobile, and is often involved with more soft tissue injuries?
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Pes Planus
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Which muscles has the largest cross-sectional area in the lower leg?
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Soleus
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