Group 5 Muscles Flashcards
Psoas Major origin
T12-L5
Psoas Major insertion
Lesser trochanter of femur
Psoas Major action
Hip flexion and external rotation
Psoas Major nerve
L2-L4
Psoas Minor origin
T12 and L1
Psoas Minor insertion
Pectineal line and iliopectineal eminence
Psoas Minor action
Flexion of the pelvis and lumbar spine
Psoas Minor nerve
L1 2
Iliacus origin
Superior 2/3 of iliac fossa, iliac crest and ala of sacrum
Iliacus insertion
Lesser trochanter of femur
Iliacus action
Hip flexion and external rotation
Iliacus nerve
Femoral (L2-L4)
Pectineus origin
Pectineal line of pubis
Pectineus insertion
Pectineal line
Pectineus action
Hip adduction, flexion and slight internal rotation
Pectineus nerve
Femoral and accessory obturator (L2 3 4)
Tensor Fasciae Latae origin
Lateral aspect of anterior superior iliac crest
Tensor Fasciae Latae insertion
Fascia lata about halfway down thigh, down to Gerdy’s tubercle on the tibia via the iliotibial tract
Tensor Fasciae Latae action
Hip flexion, abduction and internal rotation
Tensor Fasciae Latae nerve
Superior gluteal (L4 5 S1)
Sartorius origin
Anterior superior spine of ilium and notch inferior
Sartorius insertion
Medial aspect of tibia at junction of head and shaft (medial to tuberosity)
Sartorius action
Hip flexion, abduction and external rotation, knee flexion and internal rotation
Sartorius nerve
Femoral (L2 3 (4))
