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18 Cards in this Set
- Front
- Back
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3 articulations of the knee:
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tibia/femur - extension/flexion
tibia/femur - slightly rotational when extended patela/femur - gliding joint |
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Bursa
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synovial sacks all over the body that reduce friction between moving parts.
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the only muscles that extend the knee:
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quadriceps
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Patella
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embedded in and protects the quadriceps tendon.
protects the knee joint. increases leverage of the quad. |
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Patella dislocation (common in women) can be prevented by
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strengthening the vastus medialus
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Cartilage in the knee joint
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Lateral Menisci
Medial Menisci |
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What do the menisci do for the knee?
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deepen top of tibia to add stability.
they are flexible to add motion. act as shock absorbers. |
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Which menisci attaches strongly to the tibia? which weakly?
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Medial menisci attach strongly.
Lateral menisci attach weakly. |
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4 Ligaments of the knee
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anterior cruciate ligament
posterior cruciate ligament medial collateral ligament lateral collateral ligimant |
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ACL runs from
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anterior tibial plateau to medial side of lateral femoral condyle.
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what does the ACL do for the knee?
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limits anterior movement of tibia on femur.
limits hyper-extension helps us stand with minimal effort. ACL can't heal. |
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PCL runs from
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posterior tibial plateau to the lateral side of the medial condyle of the femur
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What does the PCL do for the knee?
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limits posterior movement of tibia on femur.
limits rotation of tibia on femur. act as knee stabilizer. PCL can't heal. |
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PCL and ACL are often injured by:
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planting foot on ground and femur keeps moving.
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Medial Collateral Ligament of the knee runs from:
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tibia to femur and is attached to the medial meniscus.
it is a 1 1/2 inch broad band. |
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what does the medial collateral ligament of the knee do?
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limits abduction of the leg.
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lateral collateral ligament of the knee runs from:
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tibia to femur.
it is not attached to the meniscis |
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what does the lateral collateral ligament of the knee do?
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limits adduction of the leg.
it is less commonly injured that the medial collateral |
