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what type of joint is the knee
hinge joint
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More weight bearing bone, TIBIA or FIBULA ??
Tibia
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function of the patella serve?
pulley to improve angle of pull. Resulting in greater mechanical advantage in knee extension
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Explain the medial meniscus (full ANAtomical name, location, shape, how it is injuried)
- -Larger and more open C appearance
- -receptacle for medial femoral condyle
-Injured; compression and shear forces during rotation and changing direction
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Explain the Lateral Meniscus (full ANAtomical name, location, shape, how it is injuried)
- -Closed C configuration
- -receptacle for lateral femoral condyle
-injured: compression and shear forces during rotation and changing direction
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(full ANAtomical name, location, shape, how it is injuried)
ACL
- ACL (Anterior Cruciate Ligament)
- -INJURY: -
- -non contact rotary forces with planting and cutting
- - hyper extension
- -violent quad contraction
- -crosses withing knee between the tibia and femur
- -important for maintaining anterior stability
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(full ANAtomical name, location, shape, how it is injuried)
PCL
- PCL (Posterior Cruciate Ligament)
- cross within knee between tibia and femur (posterior)
- maintaining posterior stability and rotatory stability
- INJURY: Direct contact w/opponent or playing surfaces
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(full ANAtomical name, location, shape, how it is injuried)
LCL
- LCL (Fibular (lateral) Collteral Ligament)
- Lateral side of the knee and it is rounded
- Stretches obliquely downward and backward
- Injury- Varus forces across the knee
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(full ANAtomical name, location, shape, how it is injuried)
MCL
- MCL (Tibial (Medial) Collateral ligament)
- stability by resisting valgus forces or preventing knee form abducted
- contact or collision sport where force is applied inward
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Explain the Q angle?
- central line of pull for all the quad
- Normal angle = 15<less males 20<less for females
- Higher Q angles = future knee problems
- ppl w/High Q angle should develop strength in muscle around the knee and Hip
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3 Muscles, movement, exercises
Rectus femoris muscle
- Rectus femoris muscle-
- flexion of the hip
- extension of knee
- anterior pelvic rotation
- Exercises-
- knee extension
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3 Muscles, movement, exercises
Vastus intermedius muscle
- Movement-
- knee extension
- exercises-
- knee extension (leg)
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3 Muscles, movement, exercises
Vastus medialis muscle
- Movements-
- knee extension
- Exercises-
- leg extensions
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Quads fucntion as what during running and changing direction?
What do they prevent when landing?
- Decreasing speed to change direction
- prevent damage to knee joint due to shock
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Explain PATELLOFEMORAL stability
- Problem bc quads are prone to atrophy when injuries occur
- resisted knee extension activities from seated position to help stabilize
- strength and endurance should be trained
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What is VMO? What muscle is VMO? When is VMO emphasized?
- VMO - VASTUS MEDIALIS OBLIQUUS
- important for maintaining patellofemoral stability bc oblique attachment of distal fibers to superior medial patella
- emphasized last 10-20 degrees of knee extension
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Muscle group, RUNNING MUSCLE
- Hamstrings
- Semitendinous
- Biceps femoris
- Semimembranosus
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