Individual Variation.—On both sides of one specimen, the branch from the femoral nerve passes lateral to the extreme anteroproximal corner of M. iliotrochantericus medius instead of through the femoral notch.
T. cupido
Individual Variation.—In one leg, the insertional tendon is strongly fused to the insertional tendon of M. iliotrochantericus medius.
P. p. jamesi
Individual Variation.—None of significance.
M. Iliacus (M. iliotrochantericus anterior), [Figs. 13], [14], [15], [16], [17]
T. pallidicinctus
General Description and Relations.—Adjacent ventrally to ventrolateral edge of M. gluteus profundus; lateral edge much thicker than medial edge; deep to M. extensor iliotibialis lateralis and anterolateral to M. iliotrochantericus medius; distal (posterior) end passing between proximal ends of Mm. vastus medialis and vastus lateralis pars lateralis; insertion overlapped by latter; dorsal surface of anterior part fused with ventrolateral edge of M. gluteus profundus and with ventral surface of proximal accessory aponeurosis of M. extensor iliotibialis lateralis; ventral surface partly fused with distal accessory aponeurosis of latter muscle.
Origin.—The origin is fleshy and tendinous from the lateral edge of the anterior part of the ilium.
Insertion.—The attachment is by a short flat tendon to the lateral surface of the femur distal to the trochanter and anterodistal to the insertion of M. piriformis and deep to the proximal part of M. vastus lateralis pars lateralis.