Semimembranosus distal tendon avulsion
Last revised by Daniel J Bell ◉ on 28 Oct 2019
Citation, DOI, disclosures and article data
Citation:
Abdrabou A, Bell D, Knipe H, et al. Semimembranosus distal tendon avulsion. Reference article, Radiopaedia.org (Accessed on 26 Sep 2023) https://doi.org/10.53347/rID-22928
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rID:
22928
Article created:
4 May 2013, Ahmed Abdrabou
Disclosures:
At the time the article was created Ahmed Abdrabou had no recorded disclosures.
View Ahmed Abdrabou's current disclosuresLast revised:
28 Oct 2019, Daniel J Bell ◉
Disclosures:
At the time the article was last revised Daniel J Bell had no recorded disclosures.
View Daniel J Bell's current disclosuresRevisions:
17 times, by 8 contributors - see full revision history and disclosures
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Synonyms:
- Avulsion of semimembranosus distal tendon
- Semimembranosus tendon distal avulsions
- Avulsion of the semimembranosus distal tendon
Semimembranosus distal tendon avulsion is a specific type of hamstring avulsion injury that can occur in the knee.
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Pathology
External rotation and abduction of the flexed knee or valgus force applied to the tibia. Associated injuries include anterior cruciate ligament (ACL) rupture, posterior horn medial meniscal tear and posteromedial corner injuries.
Radiographic features
Plain radiograph
Very hard to detect on plain film and may be seen on lateral view as a displaced bony fragment.
MRI
MRI is the best modality to detect the lesion and additional associated soft tissue injuries. The small bony fragment may be displaced or in situ. Associated anterior cruciate ligament rupture, posterior horn of medial meniscal tear and meniscocapsular separation are usually present.
Differential diagnosis
- fat in the distal semimembranosus tendon
- recognized normal variant
- the tendon attachment to the tibia should remain intact
- no tendon retraction
References
- 1. Gottsegen CJ, Eyer BA, White EA et-al. Avulsion fractures of the knee: imaging findings and clinical significance. Radiographics. 2008;28 (6): 1755-70. Radiographics (full text) - doi:10.1148/rg.286085503 - Pubmed citation
- 2. Bencardino JT, Rosenberg ZS, Brown RR et-al. Traumatic musculotendinous injuries of the knee: diagnosis with MR imaging. Radiographics. 2000;20 Spec No (suppl 1): S103-20. Radiographics (full text) - Pubmed citation
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