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Semitendinosus
Region: Hip & Thigh Muscles · All hip & thigh muscles
Semitendinosus at a glance
| Origin | Ischial tuberosity |
|---|---|
| Insertion | Upper medial surface of the tibia (pes anserinus) |
| Actions | Bends the knee (flexion); Extends the thigh; Rotates the leg inward when the knee is bent |
| Nerve supply | Sciatic nerve, tibial division (L5–S2) |
◆ Good to know
Named for its long cord-like tendon — half tendon, half muscle; a popular graft choice for cruciate ligament reconstruction.
More Hip & Thigh Muscles
Please note: This page is an anatomy education summary for students and curious readers, not medical advice. Attachment points are given in their classic short form; individual anatomy varies, and detailed dissection-level descriptions belong in an anatomy atlas.