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

QF

OI

GS

GI

MUSCLES OF GLUTEAL REGION

MUSCLE NERVE SUPPLY

1 Gluteus maximus Inferior gluteal N

2 Gluteus medius Superior gluteal N

3 Gluteus minimus Superior gluteal N

4 Pyriformis N. to pyriformis

5 Obturator externus

Obturator N

6 Obturator internus

N. to obturator internus

7 Gamellus superior N. to obturator internus

8 Gamellus inferior N. To qudratus femoris

9 Quadratus femoris

N. To qudratus femoris

MUSCLES OF GLUTEAL REGION ACTION

MUSCLE ACTION

1 Gluteus maximus

Extension of thighLat. Rotation of thighSupports the extended knee

2 Gluteus medius Abduction of thighMed. Rotation of thighMaintain balance of the body when the opposite foot is off the ground

3 Gluteus minimus

4 Pyriformis

Lat. Rotation of thigh

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

1. Gluteus medius2. Gluteus minimus3. Reflected head of

rectus femoris4. Pyriformis5. Gemillus superuir6. Obturator internus 7. Gamellus inferior8. Quadratus femoris9. Obturator externus10.Origin of hamstrings11.Attachment of pubic

fibres of adductor magnus

12

4

8GM

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

1. Superior gluteal2. Inferior gluteal3. Sciatic4. Post. Cut. N of thigh5. N. to quadratus

femoris6. Pudendal N7. N to obturator

internus8. Perforating cut.

nerves

3

3

4

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

• LIGAMENTS– 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