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Gluteal region

Nerves, Blood supply, origin, insertion

MuscleOriginInsertionBlood SupplyInnervation
Piriformis Ant sacral surface between pelvic foramina & grooves from them; capsule of SI jt; upper pelvic surface of sacrotuberous lig; gluteal surface of ilium near posterior intferior iliac spine Medial side of upper border of greater trochanter of femur Pelvis - Lateral sacral Buttock - Superior gluteal a N to piriformis L5-S2
Obturator externus Medial 2/3 of external surface of obturator membrane and adjacent pubic and iscial rami Trochanteric fossa of femur Obturator a; medial circumflex femoral a Post br of obturator n from L3,L4
Obturator internus Pelvic surface of coxal bone from greater foramen; Medial part of pelvic surface of obturator membrane and obturator fascia; Inf ramus of pubis & ischial ramus Ant impression on medial surface of greater trochanter anterosuperior to trachanteric fossa (O,bip Gbip) Intrapelvic: Obturator a, br from internal pudendal Extrapelvic - Gemmellar br of internal pudendal N to obturator internus from L5,S1 (same as gemellus sup)
Gemellus superior Dorsal surface of ischial spine Medial surface of greater trochanter with obturator internus Internal pudendal and gemellar br N to obturator internus L5,S1
Gemellus inferior Upper part of ischial tuberosity immediately below lesser sciatic notch Medial surface of greater trochanter with obturator internus Medial circumflex femoral a N to quadratus femoris L5,S1
Quadratus femoris Upper part of external aspect of ischial tuberosity Quadrate tubercle above middle trochanteric crest of femur Medial circumflex femoral a; inferior gluteal a N to quadratus femoris fromL5,S1
Gluteus Maximus Aponeurosis of erector spinae; Dorsal surface of lower part of sacrum & side of coccyx, sacrotuberous lig; post gluteal line of ilium and crest below and behind it; gluteal aponeurosis over gluteus medius Ilitibial tract Gluteal tuberosity of femur (ML,LS,SI,IP,1PP)Superior & inferior gluteal aa; medial and lateral circumflex fem, 1st profunda perforator, lateral sacral, and internal pudendal inferior gluteal n L5-S2
Gluteus medius Outer surface of ileum between iliac crest and posterior and ant gluteal lines Lateral surface of greater trochanter Deep br of superior gluteal a; trochanteric anastomosis Superior gluteal n L4-S1
Gluteus minimus OUter surface of ileum between anterior and inferior gluteal lines; margin of greater sciatic notch Aponeurosis to anterolateral surface of greater trochanter Superior gluteal a and deep br; trochanteric anastomosis Superior gluteal n L4-S1
Tensor fasciae latae Anterior outer lip of iliac creest; lat surface of ant superior iliac spine and border of notch below; deep surface of fascia lata 2 layers of iliotibial tract 1/3 way down thigh Ascending br of lateral circumflex femoral a, superfical circumflex iliac, and superior gluteal aa Superior gluteal n L4-S1
Created by: PippaODU