An unorthodox innervation of the gluteus maximus muscle and other associated variations: A case report.
Knowledge of peripheral nerve morphology, location, and variation is important for facilitating appropriate diagnosis and intervention. We present a unique case of absence of the inferior gluteal nerve and high division of the sciatic nerve. In this instance, the common peroneal nerve was found piercing the piriformis muscle and emerging distally in the form of two trunks: thin medial and thick lateral. The medial trunk presented an interesting course, supplying the gluteus maximus muscle before joining the lateral trunk to form the common peroneal nerve. Additionally, the arteria nervi ischiadisci was also observed accompanying and supplying the tibial nerve passing inferior to the piriformis. These variations are important for clinicians and surgeons for some radiological diagnoses and surgical procedures in the lower limb.
Department of Anatomy, Kasturba Medical College Manipal University, Manipal, India.
Suhani
S
Sumalatha
Department of Anatomy, Kasturba Medical College Manipal University, Manipal, India.
Antony Sylvan
AS
D Souza
Department of Anatomy, Kasturba Medical College Manipal University, Manipal, India.
Jitendra Singh
JS
Yadav
Department of Anatomy, Kasturba Medical College Manipal University, Manipal, India.
Sachendra Kumar
SK
Mittal
Department of Anatomy, Kasturba Medical College Manipal University, Manipal, India.
Amoldeep
A
Singh
Department of Anatomy, Kasturba Medical College Manipal University, Manipal, India.
Sushma R
SR
Kotian
Gluteus maximus; arteria nervi ischiadisci; common peroneal nerve; inferior gluteal nerve; piriformis; sciatic nerve