GLUTEAL REGION DR TAHIR HUSSAIN

OBJECTIVES Arrange the muscles of the gluteal region and give their actions and nerve supply. Enumerate the structures deep to gluteus maximus muscle.

GLUTEUS MAXIMUS

ARRANGEMENT OF MUSCLES GMax GMed GMin Piri GS OI GI QF

MUSCLES OF GLUTEAL REGION NERVE SUPPLY 1 Gluteus maximus Inferior gluteal N 2 Gluteus medius Superior gluteal N 3 Gluteus minimus 4 Pyriformis N. to pyriformis 5 Obturator externus Obturator N 6 Obturator internus N. to obturator internus 7 Gamellus superior 8 Gamellus inferior N. To qudratus femoris 9 Quadratus femoris

MUSCLES OF GLUTEAL REGION ACTION 1 Gluteus maximus Extension of thigh Lat. Rotation of thigh Supports the extended knee 2 Gluteus medius Abduction of thigh Med. Rotation of thigh Maintain balance of the body when the opposite foot is off the ground 3 Gluteus minimus 4 Pyriformis 5 Obturator externus 6 Obturator internus 7 Gamellus superior 8 Gamellus inferior 9 Quadratus femoris

STRUCTURES DEEP TO GLUTEUS MAXIMUS MUSCLES VESSELS NERVES BONES AND JOINTS LIGAMENTS BURSAE

MUSCLES DEEP TO GLUTEUS MAXIMUS Gluteus medius Gluteus minimus Reflected head of rectus femoris Pyriformis Gemillus superuir Obturator internus Gamellus inferior Quadratus femoris Obturator externus Origin of hamstrings Attachment of pubic fibres of adductor magnus 1 2 4 8 GM

VESSELS DEEP TO GLUTEUS MAXIMUS Superior gluteal Inferior gluteal Internal pudendal Ascending br. Of med. Circumflex femoral Trochanteric anastomosis Cruciate anastomosis First perforating

NERVES DEEP TO GLUTEUS MAXIMUS Superior gluteal Inferior gluteal Sciatic Post. Cut. N of thigh N. to quadratus femoris Pudendal N N to obturator internus Perforating cut. nerves 3 4 3

BONES AND JOINTS DEEP TO GLUTEUS MAXIMUS Ilium Ischium with ischial tuberosity Upper end of femor with greater trochanter Sacrum and coccyx Hip joint Sacro-iliac joint

LIGAMENTS AND BURSAE DEEP TO GLUTEUS MAXIMUS Sacrotuberous Sacrospinus Ischiofemoral BURSAE Trochanteric bursa of gluteus maximus Bursa over the ischial tuberosity Bursa b/w the gluteus maximus and vastus lateralis

THE END ANY QUESTIONS THE END