Knee Muscles

O: Lateral femoral condyle, oblique popliteal ligament of knee
I:Triangular area proximal post surface of tibia
A: In non wt bearing- (w/ origin fixed)- medially rotates femur on tibia and flexes knee
In wt bearing- (w/insertion fixed), lat rotates femur on tibia and flexes knee *helps reinforce post ligs of knee *
N Tibial l4,l5,s1

o:Straight lead- AIIS Reflected head- groove above rim of acetabulum
I: Proximal boarder of patella through patella to infrapatella tendon into tibial tubericle
A: Knee extension, Hip flexion
N-Femoral L2,3,4

0- Proximal intertochanteric line, greater trocanter, gluteal tuberosity, proximal 1/2 of linea aspera
I: Proximal boarder of patella through patella to infrapatella tendon into tibial tubericle
A: Knee Extension
N:Femoral L2-4

O- Anterolateral portion of proximal 2/3 of the femur, distal 1/2 of linea aspera
I: Proximal boarder of patella through patella to infrapatella tendon into tibial tubericle
A- knee extension
N- Femporal l2, l3, l4

o- Distal 1/2 of intertrocanteric line, med. portion of linea aspera. part of med. supracondylar line, tendons from adductor longus and magnus
I- Proximal boarder of patella through patella to infrapatella tendon into tibial tubericle
A- knee extension, oblique portion - patellar stabilization
N- Femoral L2, l3,l4

o- Ischial tuberosity
I- Posteromedial aspect of med. tibial condyle
A- flex and med rot knee, extends and assists in med rot of the hip
N- tibial l5, s1

o- Ischial tuberosity
I as pes anserine into prox medial flare of tibia
A- Flex and med rot knee, extends and assists in med rot of the hip
N- tibial L5, S1, S2

o-Long head- lischial tuberosity
Short head- lat lip of linea aspera, prox 2/3 of supracondylar line
I- Lat fibular head, lat tibial condyle
A- knee flexion and lat rot, LONG HEAD- extension and lat rot
N- Long head- tibial S1-3
short head- Common peroneal l5, s1, s2

0- ASIS
I- as pes abserine into prox medial flare of tibia
A- Flexes, lat rotates and abducts the hip jt, flexes and med rotates the knee
N- femoral l2, l3

O- symphesis pubis, inferior ramus of the pubic bone
I- as pes anserine into prox medial flare of tibia
A- hip adduction, knee flexion and med rot
N-obturator l3, l4

o- external lip of iliac crest, asis
I into tibial tract of fascia lata @ junction of prox and middle thirds of thigh
A- hip flexion, medial rot and abduction, tenses the fascia lata and may assist in knee extension
N- superior gluteal L4, L5, S1

Its neither a muscle or a tendon but rather a thick band of fascia

I- into lateral tibial tubercle (gerdys)