Semitendinosus muscle
The semitendinosus is a fusiform muscle in the posterior compartment of the thigh and hamstrings muscles. it accompanies the semimembranosus muscle in the medial aspect of the posterior thigh. It is named for its cord-like tendon which forms half way down the thigh.
Summary
- origin: ischial tuberosity
- insertion: as part of the pes anserine tendon, onto the medial superior tibia
-
action
- flexes knee joint
- medially rotates knee joint (when the knee is flexed beyond 90°)
- extends hip joint (less than biceps femoris)
-
arterial supply
- inferior gluteal artery
- perforating arteries
- popliteal artery
- innervation: tibial nerve
- antagonist: quadriceps
Related Radiopaedia articles
Anatomy: Lower limb
- skeleton of the lower limb
- joints
- hip joint
- knee joint
- tibiofibular joints
-
ankle joint
- regional anatomy
- medial ankle
- lateral ankle
- anterior ankle
- ligaments
- medial collateral (deltoid) ligament
- lateral collateral ligament
- additional structures
- ankle bursae
- ossification centers of the ankle
- variants
- regional anatomy
- foot joints
-
subtalar joint
- articulations
- ligaments
- associated structures
- mid-tarsal (Chopart) joint
-
tarsometatarsal (Lisfranc) joint
- ligaments
- intermetatarsal joint
- metatarsophalangeal joint
- interphalangeal joint
-
subtalar joint
- spaces of the lower limb
-
muscles of the lower limb
- muscles of the pelvic group
- muscles of the thigh
- muscles of the leg
- anterior compartment of the leg
- posterior compartments of the leg
- lateral compartment of the leg
- muscles of the foot
- dorsal muscles
- plantar muscles
- 1st layer
- 2nd layer
- 3rd layer
- 4th layer
- accessory muscles
- vascular supply
- innervation of the lower limb
- lymphatics
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