Knee/Thigh Assessment & Management



31400755367655 OF THE KNEEMEDIAL COLLATERAL LIGAMENT (MCL)Origin (proximal attachment): posterior aspect of medial femoral condyleInsertion (distal attachment): Metaphyseal region of the tibia, lying beneath the pes anserinusResists valgus stress at the kneeProvides 78% of resistance to valgus stress at 25 degrees of flexionProvides 57% of resistance to valgus stress at 5 degrees of flexionLATERAL COLLATERAL LIGAMENT (LCL)Origin: lateral femoral epicondyleInsertion: anterolateral fibular headResists varus stress at the kneeProvides 55% of restraint at about 5 degrees of knee flexionProvides 69% of restraint at about 25 degrees of knee flexionTaut during knee extension and lax during knee flexionANTERIOR CRUCIATE LIGAMENT (ACL)Origin: medial wall of the lateral femoral condyle within intercondylar notchInsertion: medial/anterior aspect of the tibial plateauComposed of anteriomedial and posteriolateral bundles Resistant to anterior translation of the tibia and excessive medial or lateral tibial rotationPrevents hyperextension of the kneeTaut during knee extension and lax during knee flexionPOSTERIOR CRUCIATE LIGAMENT (PCL)Origin: antero-lateral aspect of medial femoral condyle in the intercondylar notchInsertion: posterior tibial plateau about 1 cm distal to joint lineComposed of anterolateral (65% of PCL fibers) and posteromedial (35% of PCL fibers) bundlesApproximately twice and strong and thick as the ACLPrevents excessive internal rotation of the tibiaPrevents posterior translation of the tibia during weight bearing positionsTaut throughout entire knee ROMCAPSULAR LIGAMENTSAnteriorTightens during knee flexionMedialAttaches medial meniscus to femurAllows tibia to move inferiorly on meniscusPosteriorProvides support to the postero-medial joint capsuleArcuate LigamentThickening of posterior joint capsule31051503834765 ................
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