The Knee MOI

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MOI- Osgood Schlatter Disease (3)

1) Apophysitis 2) Usually in growing teens 3) Tendon pulls on tubial tubercle

MOI- PCL Sprain (3)

1) Blow/fall to flexed knee (Car Crash-dashboard blow) 2) Hyper extension 3) Valgus blow

MOI- ITB-FS (2)

1) Friction over lateral femoral condyle 2) Usually associated with tightness of ITB *tightness causes FS

MOI- Bursitis (3)

1) Overuse- muscles tight and tend to ware and tear on bursa 2) Contact- pressure on the front of the knee/blow 3) A lot of kneeling *can be acute, chronic, or recurrent

MOI- ACL Sprain (4)

1) Rotation upon a fixed foot (cutting)- most common 2) Sudden deceleration 3) Hyperextension 4) Valgus blow (blow on opp side)

MOI- Patellar Tendon Rupture (2)

1) Severe contraction 2) Chronic tendonitis *Often results from long term tendonpathy

MOI- Chondromalacia Patella (2)

1) Softening and deterioration of articular cartilage under patella 2) Probably caused by poor patella tracking or sublux/disloc

Why do we need our meniscus? (3)

1) Stabilization 2) W/o it, bones will rub 3) Stress on ligaments

MOI- Meniscal Injury (4)

1) Usually rotation on planted foot 2) Forced knee flexion 3) Valgus force 4) Egg beater kick (water polo)

MOI- MCL Sprain (2)

1) Valgus stress/blow 2) External rotation of foot

ACL stands for-

Anterior Cruciate Ligament

LCL stands for

Lateral collateral ligament

MCL stands for

Medial collateral ligament

MOI- Patellar Tendinitis

Overuse of knee extensor mechanisms (quads, patella, tendon)- jumping, kicking, running

Function of MCL

Prevents knee from going into valgus

PCL function

Purpose is to prevent posterior shift of tibia (Not common)

ACL function

Purpose is to prevent rotation and anterior shift of tibia on femur

MOI- Patellar Sublux/Dislocation

Quads force patella laterally as foot is planted w/ thigh internally rotated and tibia externally rotated causing a knee valgus force

MOI- LCL

Varus stress (Foot has to be forward)


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