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Knee Muscles OIA

Rectus Femoris O: AIIS, posterior groove above acetabulum I: Tibial tuberosity A: knee flexion
Vastus Intermedius O: upper 2/3, anterior femur I: Tibial tuberosity A: knee extension
Vastus Lateralis O: Interotrochanteric line, ant/inf greater trochanter, gluteal tuberosity, upper 1/2 of linea aspera I: Tibial tuberosity A: knee extension
Vastus Medialis O: linea aspera, medial condyloid ridge I: Tibial tuberosity A: knee extension
Popliteus O: posterior, lateral condyle of femur I: superior, posterior, medial tibia A: knee flexion, unlocks knee joint (internally rotates tibia)
Biceps Femoris O: long head: ischial tuberosity, short head: lower ½ of linea aspera I: fibular head, lateral condyle of tibia A: knee flexion
Semitendinosus O: ischial tuberosity I: postermedial tibial condyle A: knee flexion
Semimembranosus O: ischial tuberosity I: pes anserine A: knee flexion
Created by: adalmadge