Origins and insertions for The leg
HAMSTRINGS Biceps Femoris
OriginLong head -Ischial tuberosityShort head- lateral lip of linea asperaInsertionHead of the fibulaFlex knee, extend hip, tilt pelvis posteriorly,laterally rotates femur
Semitendinosus
OriginSemitendinosusInsertion Proximal, medial condyle of the tibiaFlex knee, extend hip, tilt pelvis posteriorly, medially rotate of flexed knee
Semimembranosus
OriginIschial tuberosityInsertionPosterior medial condyle of the tibiaFlex knee, extend hip, tilt pelvis posteriorly, medially rotate flexed knee(deeper, broader, most medial)
Sartorius
originAnterior superior iliac spineInsertionUpper medial shaft of tibia assists flexion, abduction, lateral rotation of hip, assists flexion, medial rotation of knee
Rectus femoris
Originanterior inferior iliac spine, ilium on upper margin of acetabulumInsertionUpper medial shaft of tibiaassists flexion, abduction, lateral rotation of hip, assists flexion, medial rotation of knee
Rectus femoris
orginanterior inferior iliac spine, ilium on upper margin of acetabuluminsertionpatella, patellar ligament to tibial tuberosityextension of knee, assists flexion of hip
Tensor fascia latae
Origin:anterior aspect of iliac crestanterior superior iliac spine (ASIS)Insertion: anterior aspect of IT band, below greater trochanter hip flexion
Glute max
OriginOuter rim of illiumDorsal surface of sacrum and coocyxxInsertionIt BandPowerfull exntensor of the hipHip flexion
Glute minimus
OriginOuter aspect of illiumInsertiongreater trochanterAbduct and meddially rotate the thigh
Quadratus femoris
# Origin: lateral aspect of ischial tuberosity# Insertion: quadrate line (along posterior aspect of femur and intertrochanteric crest)Action: laterally rotates femur
Semitendinosus
Origin: ischial tuberosityInsertion:medial aspect of tibial shaftcontributes to the pez anserineAction:extends hip
Semimembranosus
Origin: ischial tuberosityInsertion:posterior medial aspect of medial tibial condoyle Action:flexes kneeextends hip
Biceps femoris
Origin:long head: ischial tuberosityshort head: lateral lip of linea aspera and the lateral intermuscular septumInsertion:head of fibulaAction:
Adductor longus
Origin: anterior surface of pubis, just inferior to the pubic tubercleInsertion: medial lip of linea aspera on middle half of femurAction:adducts thigh
Adductor brevis
Origin: body & inferior ramus of pubisInsertion: superior portion of linea asperaAction:adducts thigh (major)
Adductor magnus
Origin:anterior fibers: inferior pubic ramus Insertion:proximal 1/3 of linea asperaadductor tubercleAction:adducts the thigh
Gracilis
Origin: body of pubis & inferior pubic ramusInsertion: medial surface of proximal tibia, inferior to tibial condyle adducts thigh
Sartorius
Origin: anterior superior iliac spine (ASIS) Insertionupper medial surface of body of tibia flexes hip and knee