Variants of the biceps femoris, such as an
auxiliary head of the biceps femoris, can be encountered on occasion. During
regular cadaveric dissection at the department of anatomy, All India Institute
of Medical Sciences, Jodhpur, we discovered a case with an accessory head of
biceps femoris in both lower limbs.
The biceps femoris' long head fibres form the
muscle belly, which runs down medially to the medial superior portion of the
tibia's medial condyle. On the right side, the insertion point resembles a
sheath and integrates halfway with the thigh's medial intermuscular septum. On the
left side, the insertion seems to be a thin sheath at first, then a thin muscle
belly. The muscle belly is slender in compared to the long and short heads of
the basic muscle bellies. The left side has a thickness of roughly 3.7mm on the
higher end and thinner on the lower end, whereas the right side has a thickness
of around 3.75mm. The right side of the muscle belly is around 5cm long,
whereas the left side is about 5.5cm long. After then, the muscular belly
creates a sheath with a length of approximately.5mm before returning to its
original length of around 3.5cm. A short head appears high above on the left
side, whereas the right side is normal.
Author (S) Details
Surajit Ghatak
All India Institute of
Medical Sciences, Jodhpur, Rajasthan, India.
Sonali Adole
All India Institute of Medical Sciences, Jodhpur, Rajasthan, India.
Debajani Deka
All India Institute of Medical Sciences, Jodhpur, Rajasthan, India.
Md Faizal
All India Institute of Medical Sciences, Jodhpur, Rajasthan, India.
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Book :- https://stm.bookpi.org/NFMMR-V6/article/view/2772