knee oia

Anterior Cruciate Ligament

Proximal attachment - posterolateral femur, Distal attachment - anteromedial plateau, Function - Prevents anterior translation of the tibia.

Posterior Cruciate Ligament

Proximal attachment - anteromedial femur, Distal attachment - posterior surface of tibial plateau, Function - Prevents posterior translation of the tibia on the femur.

Medial Collateral Ligament

Proximal attachment - medial femoral condyle, Distal attachment - medial tibial condyle, Function - Resists valgus stress.

Lateral Collateral Ligament

Proximal attachment - lateral femoral condyle, Distal attachment - head of the fibula, Function - Resists varus stress.

Iliotibial Band

Proximal attachment - tensor fascia late and glute max, Distal attachment - Gerdy's tubercle, Function - Stabilizes hip and braces knee.

Rectus Femoris

Proximal attachment - AIIS, Distal attachment - tibial tuberosity, Action - Knee extension & hip flexion.

Vastus Lateralis

Proximal attachment - intertrochanteric line, Distal attachment - tibial tuberosity, Action - Knee extension.

Vastus Medialis

Proximal attachment - intertrochanter-line, Distal attachment - tibial tuberosity, Action - Knee extension.

Vastus Intermedius

Proximal attachment - anterior surface of femur, Distal attachment - tibial tuberosity, Action - Knee extension.

Biceps Femoris

Proximal attachment - ischial tuberosity, Distal attachment - head of fibula, Action - Hip extension & knee flexion.

Semimembranosus

Proximal attachment - ischial tuberosity, Distal attachment - medial tibial condyle, Action - Hip extension & knee flexion.

Semitendinosus

Proximal attachment - ischial tuberosity, Distal attachment - movement with Sartorius & gracilis, Action - Hip extension & knee flexion.

Gracilis

Proximal attachment - ASIS, Distal attachment - pes anserinus, Action - Weak knee flexor, moves hip.

Sartorius

Proximal attachment - pubic ramus, Distal attachment - pes anserinus, Action - Weak knee flexor, moves hip.

Popliteus

Proximal attachment - lateral supracondylar ridge of femur, Distal attachment - posterior surface of tibia, Action - Weak knee flexor, medial tibial rotation.