Anat Cell Biol.  2019 Mar;52(1):90-92. 10.5115/acb.2019.52.1.90.

Clinical importance of tensor fasciae suralis arising from linea aspera along with short head of biceps femoris: a rare anomaly

• George BM
• Nayak SB
• Marpalli S

• KMID: 2442336
• DOI: http://doi.org/10.5115/acb.2019.52.1.90

Abstract

Tensor fasciae suralis, also known as ischioaponeuroticus is a clinically relevant muscle variant located in the popliteal fossa. Though rare, when present the muscle may arise from any of the hamstrings and gets inserted to the crural fascia of leg or tendocalcaneus and is innervated by the tibial component of sciatic nerve. Here we report a variant of tensor fasciae suralis originated from the lowermost part of linea aspera along with the fibers of short head of biceps femoris in the left lower limb of a male cadaver aged approximately 58 years. The muscle was 16 cm in length and 1 cm breadth in its widest part. It was found inserted to the crural fascia over the lateral head of gastrocnemius and was found innervated by common peroneal nerve. To the best of our knowledge, the tensor fascia suralis muscle originated from linea aspera along with short head of biceps femoris and innervated by common peroneal nerve has not been reported in either cadaveric or imaging studies.

Keyword

Tensor fasciae suralis; Linea aspera; Common peroneal nerve; Popliteal fossa; Biceps femoris

MeSH Terms

Cadaver
Fascia*
Head*
Humans
Leg
Lower Extremity
Male
Peroneal Nerve
Sciatic Nerve

Figure

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  Fig. 1 Dissected popliteal fasciae. Note the tensor fasciae suralis (TFS) overlapping the common peroneal nerve (CPN) and lateral cutaneous nerve of the calf (LCN). Origin of TFS from linea aspera also visible.

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  Fig. 2 Distant view of the popliteal fasciae. Note the motor nerve supply to tensor fasciae suralis (TFS) from common peroneal nerve.

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  Fig. 3 A composite photograph showing both right and left legs to compare the peroneus longus and brevis muscles of two sides. The peroneal muscles were about 3 mm broader in the right leg when compared to the left leg.

Reference

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