Fig. 1

Photographs of the gluteal and posterior aspects of the thigh representing: the exit patterns (A-F); branching patterns (G); and terminations patterns (a&b) of the cadaveric sciatic nerves in the general Ugandan population. N = 62. A. Type A (Below and undivided); undivided SN goes inferior to the piriformis.B. Type B (Below and divided); division of SN occurring below the piriformis with one part passing in front of the muscle and the other part below it. C. Type C (Above and undivided); undivided SN goes superior to the piriformis.D. Type D (Above and divided); division of SN occurring above the piriformis with one part passing in front of the muscle and the other part above itE. Type E (Within and undivided); course of SN undivided through the piriformis muscle. F. Type F (Within and divided); course of SN divided through the piriformis muscle. G.The “Pentafurcate branching pattern”; SNshowedfive divisions during its course in the posterior compartment of the thigh.a. Birfucate termination pattern; SN divides into two terminal branches.b. Trifurcate termination pattern; SN divides into three terminal branches. Abbreviations. CPN = common peroneal nerve; SN = sciatic nerve; TN = tibial nerve. N = the total number of the sample