Semitendinosus
Semitendinosus
The Semitendinosus is one of the three hamstring muscles that are located at the back of the thigh. The other two are the semitendinosus and the biceps femoris. The semitendinosus muscle is so named because it has a long tendon of insertion. It originates from the ischial tuberosity and inserts to the pes anserinus (goose foot) on the medial surface of the upper tibia.
Anatomy[edit | edit source]
The semitendinosus, remarkable for the great length of its tendon of insertion, is situated at the posterior and medial aspect of the thigh. It arises from the lower and medial impression on the upper part of the tuberosity of the ischium, by a tendon common to it and the long head of the biceps femoris; it also arises from an aponeurosis which connects the adjacent surfaces of the two muscles to the extent of about 7.5 cm. from their origin.
Function[edit | edit source]
The semitendinosus muscle performs two main functions: flexion of the knee and extension of the hip joint. It also helps in medially rotating the knee: the tibia medially rotates on the femur when the knee is flexed. It medially rotates the femur when the hip is extended. It counteracts forward bending at the hips.
Clinical significance[edit | edit source]
The semitendinosus muscle can be used in surgical reconstruction of the anterior cruciate ligament (ACL). The tendons of the semitendinosus and the gracilis muscle are often used in combination, known as a hamstring graft.
See also[edit | edit source]
- Hamstring
- Tendon
- Ischial tuberosity
- Pes anserinus
- Tibia
- Flexion
- Extension
- Anterior cruciate ligament
- Gracilis muscle
| Semitendinosus Resources | |
|---|---|
|
 |
Search WikiMD
Ad.Tired of being Overweight? Try W8MD's physician weight loss program.
Semaglutide (Ozempic / Wegovy and Tirzepatide (Mounjaro / Zepbound) available.
Advertise on WikiMD
|
WikiMD's Wellness Encyclopedia |
| Let Food Be Thy Medicine Medicine Thy Food - Hippocrates |
Translate this page: - East Asian
中文,
日本,
한국어,
South Asian
हिन्दी,
தமிழ்,
తెలుగు,
Urdu,
ಕನ್ನಡ,
Southeast Asian
Indonesian,
Vietnamese,
Thai,
မြန်မာဘာသာ,
বাংলা
European
español,
Deutsch,
français,
Greek,
português do Brasil,
polski,
română,
русский,
Nederlands,
norsk,
svenska,
suomi,
Italian
Middle Eastern & African
عربى,
Turkish,
Persian,
Hebrew,
Afrikaans,
isiZulu,
Kiswahili,
Other
Bulgarian,
Hungarian,
Czech,
Swedish,
മലയാളം,
मराठी,
ਪੰਜਾਬੀ,
ગુજરાતી,
Portuguese,
Ukrainian
Medical Disclaimer: WikiMD is not a substitute for professional medical advice. The information on WikiMD is provided as an information resource only, may be incorrect, outdated or misleading, and is not to be used or relied on for any diagnostic or treatment purposes. Please consult your health care provider before making any healthcare decisions or for guidance about a specific medical condition. WikiMD expressly disclaims responsibility, and shall have no liability, for any damages, loss, injury, or liability whatsoever suffered as a result of your reliance on the information contained in this site. By visiting this site you agree to the foregoing terms and conditions, which may from time to time be changed or supplemented by WikiMD. If you do not agree to the foregoing terms and conditions, you should not enter or use this site. See full disclaimer.
Credits:Most images are courtesy of Wikimedia commons, and templates Wikipedia, licensed under CC BY SA or similar.
Contributors: Prab R. Tumpati, MD
