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An Additional Head of Biceps Femoris: A Case Report
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Why is it important?
Background: Anatomists and clinicians need to be aware about existence of muscle variation. The biceps femoris is the muscle of thigh having two heads. Methods and Material: During cadaveric dissection we got the muscle variation. The biceps femoris muscle shows variations in its origin bilaterally. Both right and left limbs were carefully and cleanly dissected. Results: In the upper portion of muscle, few fibers was diverged & directed medially, downwards and inferiorly, and joined with distal fibers of semitendinosus muscle. The length of these fibers was 8.2 cm on right and 7.6 cm on left side. Hence the muscle fibers diverging from long head of biceps femoris muscle, they look like additional head of biceps femoris. Conclusions: These fibers merges with semitendinosus, they may give strain in posterior compartment, compress sciatic nerve & strengthen semitendinosus muscle. These fibers may create misconceptions to clinicians and diagnostic experts.
Perspectives
Background: Anatomists and clinicians need to be aware about existence of muscle variation. The biceps femoris is the muscle of thigh having two heads. Methods and Material: During cadaveric dissection we got the muscle variation. The biceps femoris muscle shows variations in its origin bilaterally. Both right and left limbs were carefully and cleanly dissected. Results: In the upper portion of muscle, few fibers was diverged & directed medially, downwards and inferiorly, and joined with distal fibers of semitendinosus muscle. The length of these fibers was 8.2 cm on right and 7.6 cm on left side. Hence the muscle fibers diverging from long head of biceps femoris muscle, they look like additional head of biceps femoris. Conclusions: These fibers merges with semitendinosus, they may give strain in posterior compartment, compress sciatic nerve & strengthen semitendinosus muscle. These fibers may create misconceptions to clinicians and diagnostic experts.
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This page is a summary of: An Additional Head of Biceps Femoris: A Case Report, Indian Journal of Anatomy, June 2020, Red Flower Publication Private, Ltd.,
DOI: 10.21088/ija.2320.0022.9220.15.
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