AI Article Synopsis
- The study investigates the relationships between the proximal attachments of hamstring muscles and surrounding structures using ultrasound and anatomical samples from 97 hemipelvis specimens.
- Results show distinct hyperechogenic lines surrounding the origins of the semimembranosus and biceps femoris, and reveal that the semimembranosus muscle has a more proximal origin compared to other hamstring muscles.
- The findings suggest that these anatomical connections may help explain the common injuries at the origins of the hamstring muscles.
Article Abstract
Background: Injuries of the proximal attachment of the hamstring muscles are common. The present study aimed to investigate the relationship of the proximal attachment of the hamstring muscles with neighboring structures comprehensively.
Methods: A total of 97 hemipelvis from 66 cryopreserved specimens were evaluated via ultrasound, anatomical and histological samples.
Results: The proximal attachment of the hamstring muscles presents a hyperechogenic line surrounding the origin of the semimembranosus and the long head of the biceps femoris muscles, as well as another hyperechogenic line covering the sciatic nerve. The anatomical and histological study confirms the ultrasound results and shows different layers forming the sacrotuberous ligament. Furthermore, it shows that the proximal attachment of the semimembranosus muscle has a more proximal origin than the rest of the hamstring muscles. Moreover, this muscle shares fibers with the long head of the biceps femoris muscle and expands to the adductor magnus muscle. The histological analysis also shows the dense connective tissue of the retinaculum covering the long head of the biceps femoris and semimembranosus muscles, as well as the expansion covering the sciatic nerve.
Conclusions: These anatomical relationships could explain injuries at the origin of the hamstring muscles.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11353185 | PMC |
| http://dx.doi.org/10.3390/diagnostics14161725 | DOI Listing |
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