Piriformis - Attachments, Actions & Innervation
Quadratus Femoris – Attachments, Actions & Innervation
The quadratus femoris is a muscle in the posterior side of the hip joint.
Attachments of Quadratus Femoris: Origin: & Insertion:
Origin: (proximal attachments)
a.Ischial tuberosity, lateral border.
Insertion: (distal attachments)
a.Quadrate tubercle near base of greater trochanter and intertrochanteric crest of femur.
Actions of Quadratus Femoris on the thigh (femur):
a. Laterally Rotates thigh at hip.
b.Helps Adduct thigh at hip.
Learn the main muscles of the lower limb with 3D videos that boost your anatomy knowledge.
Nerve to Muscle and its Spinal Segment:
a.Branch of sacral plexus (S1, S2).