- Study group
- Posterior thigh
- Model side
- Left
- Main knee action
- Flexion
- Motor supply
- Tibial division of the sciatic nerve
Identify semitendinosus
Semitendinosus belongs to the medial side of the posterior thigh group.
Its tibial attachment is part of the pes anserinus, unlike the medial-condylar attachment of semimembranosus.
Sources: Posterior thigh anatomy tables · Posterior thigh teaching notes
Principal attachments
It runs from the lower-medial ischial tuberosity to the medial proximal tibia through the pes anserinus attachment.
Use Show context on this structure page to reveal the same-side bones. Attachment areas named in the text are not separately clickable landmarks.
Sources: Posterior thigh anatomy tables
Function and joint crossing
It bends the knee and contributes to hip extension.
This is a static surface study. Camera controls do not simulate muscle shortening, joint rotation or a measured range of motion.
Sources: Posterior thigh teaching notes
Innervation
Motor supply: tibial division of the sciatic nerve.
Nerves and blood vessels are absent from the current model. This text is not a patient-specific nerve map.
Sources: Posterior thigh teaching notes
Read the model
Explore left semitendinosus in 3D
- Look from behind. Use Back, then rotate toward the inside of the knee. Follow the narrowing distal mesh and compare its course with semimembranosus.
- Restore the same leg. Show context restores 31 bones and 21 muscle parts on this side. Use Focus selection to return attention to the chosen structure.
- Compare the posterior group. The regional thigh close-up omits the tibia and fibula; use this full-leg structure page when inspecting distal attachment context. Left posterior thigh guides →
Sources and editorial status
This guide uses independently written explanations with links to the evidence behind them. Source checking and specialist anatomical review are separate steps; the latter is still pending.
- Texas Tech University Health Sciences Center El Paso — Hip, posterior thigh and leg anatomy tables
Principal attachments and medial/lateral relationships. These short descriptions are not an exhaustive list of tendon expansions.
- Texas Tech University Health Sciences Center El Paso — Hip and posterior thigh dissector answers
Posterior thigh group, the short-head exception and tibial versus common fibular divisions. No source text or dissection photographs are reproduced.
3D geometry and its separate license are credited beneath the viewer. References do not imply endorsement of this site.