Attachments

Peroneus longus (Origin)

Head and upper lateral surface of the fibula.

Peroneus longus (Insertion)

Plantar surfaces of the medial cuneiform and base of the first metatarsal.

Transverse abdominis (Origin)

Internal surfaces of costal cartilages 7–12, thoracolumbar fascia, iliac crest, and lateral part of the inguinal ligament.

Transverse abdominis (Insertion)

Linea alba and pubic crest/pecten pubis through the conjoint tendon.

Quadratus lumborum (Origin)

Iliac crest and iliolumbar ligament.

Quadratus lumborum (Insertion)

12th rib and transverse processes of L1–L4.

Semimembranosus (Origin)

Ischial tuberosity.

Semimembranosus (Insertion)

Posterior surface of the medial tibial condyle.

External oblique (Origin)

External surfaces of ribs 5–12.

External oblique (Insertion)

Linea alba, pubic region, and anterior half of the iliac crest (lower aponeurotic border forms the inguinal ligament).

Sternocleidomastoid (Origin)

Manubrium of the sternum and medial clavicle.

Sternocleidomastoid (Insertion)

Mastoid process of the temporal bone and lateral superior nuchal line of the occipital bone.

Biceps femoris (Origin)

Long head: Ischial tuberosity; Short head: Linea aspera and lateral supracondylar line of the femur.

Biceps femoris (Insertion)

Mainly the head of the fibula.

Tibialis anterior (Origin)

Lateral tibial condyle, upper lateral tibia, and interosseous membrane.

Tibialis anterior (Insertion)

Medial cuneiform and base of the first metatarsal.

Gastrocnemius (Origin)

Posterior femur around the medial and lateral condyles.

Gastrocnemius (Insertion)

Posterior calcaneus through the Achilles tendon.

Rectus femoris (Origin)

Anterior inferior iliac spine (AIIS) and ilium superior to the acetabulum.

Rectus femoris (Insertion)

Patella through the quadriceps tendon, transmitting force to the tibial tuberosity through the patellar ligament.

Flexor Hallucis longus

 inserts onto the plantar surface of the distal phalanx of the big toe.

Pes Anserinus

Sartorius

Gracilis

Semitendinosus