Anat Cell Biol.  2024 Dec;57(4):621-624. 10.5115/acb.24.076.

Unusual nerve communication in gluteal region: embryological basis and clinical perspective

• Dhawan V
• Sangma SS
• Seth S
• Deshmukh V
• Baxla M
• Singh S

• KMID: 2562512
• DOI: http://doi.org/10.5115/acb.24.076

Abstract

The posterior femoral cutaneous nerve (PFCN) has been widely studied with context to its origin, distribution and mononeuropathies. Due to the vulnerability of the gluteal region to iatrogenic injuries and pressure ulcers etc., an understanding of the cutaneous innervation of the gluteal region holds immense relevance. The communication between the PFCN and the inferior gluteal nerve (IGN) was observed at the back of thigh of a 56-year-old male cadaver while exploring distribution of nerves in gluteal region during routine anatomical dissection. The above communication holds importance in numerous diagnostic and reconstructive procedures. It assumes relevance where nerve blocks in PFCN are needed for surgical procedures in the vicinity of the thigh, knee, and the postero-superior part of the leg. The grade of motor response elicited in IGN on attempted PFCN stimulation could be a reliable determinant of adequate PFCN block.

Keyword

Posterior femoral cutaneous nerve; Inferior gluteal nerve; Gluteal; Nerve block

Figure

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  Fig. 1 Photograph showing right gluteal region. (A) Structures emerging below piriformis muscle after reflecting gluteus maximus muscle. (B) Sensory motor communication (SMC) between inferior gluteal nerve (IGN) and posterior femoral cutaneous nerve (PFCN) at the back of the thigh; (C) termination of PFCN after supplying the skin at the back of the knee in the popliteal fossa. SN, sciatic nerve; GS, gemellus superior muscle; OI, obturator internus muscle; GI, gemellus inferior muscle; QF, quadratus femoris muscle; BF, biceps femoris muscle.

Reference

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