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16 Cards in this Set
- Front
- Back
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What is the screw- home mechanism |
Tibia to rotate laterally (ER) on the femur during ext Tibia to rotate medially (IR) on the femur during flexion It is the ER in ext that locks the knee into ext |
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Describe Q angle |
13-18 is normal Angle b/t quads muscle and patellar tendon Line from ASIS and midpoint of patella |
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Anterior cruciate ligament (intracapsular) |
Prevents hyperext of knee Checks femur from being displaced posteriorly on the tibia or the tibia from being displaced anteriorly on the femur |
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Posterior cruciate ligament |
Keeps femur from being displaced anteriorly on the tibia Or tibia from being displaced posteriorly on the femur |
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Medial cruciate ligament |
Provides medial stability and prevents excessive motion at the medial knee as a result of a blow to the lateral knee |
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Lateral cruciate ligament |
Provides lateral stability and prevents excessive motion at the lateral knee as a result of a blow to the medial knee |
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Which meniscus is more frequently injured |
Medial meniscus |
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What pairs with genu valgum to obtain knock knees |
Coxa vara |
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What pairs with genu varum to obtain bowlegs |
Coxa valgum |
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Rectus femoris |
Knee extension |
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Vastus lateralis |
PA: linea aspera DA: tibial tuberosity via patellar tendon A: knee extension N: femoral |
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Vastus medialis |
PA: linea aspera DA: tibial tuberosity vis patellar tendon A: knee ext N:femoral |
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Vastus intermedialis |
PA: anterior femur DA: tibual tuberosity via patellar tendon A: knee ext N: femoral |
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Semimembranosus& semitendinosus |
Extend hip, flex knee |
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Popliteus |
PA: lateral condyle of femur DA: posterior medial condyle of tibia A: initiates knee flex N: tibial nerve |
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Gastrocnemius |
PA: medial and lateral condyles on femur DA: posterior calcaneus A: knee flex, ankle PF N:tibial |
