Muscles of the gluteal region Flashcards
Piriformis
O: Sacrum between anterior sacral foramina
INS: Greater trochanter of femur
INN: superior gluteal nerve
FUN: Lateral rotation and abduction of femur at hip joint
Obturator internus
O: Anterolateral wall of true pelvis
INS: greater trochanter of femur
INN: nerve to obturator internus
FUN: Lateral rotation and abduction of femur at hip joint
Gemellus superior
O: ischial spine
INS: greater trochanter of femur + obturator internus tendon
INN: nerve to obturator internus
FUN: Lateral rotation and abduction of femur at hip joint
Gemellus inferior
O: Ischial tuberosity
INS: obturator internus tendon + greater trochanter of femur
INN: nerve to quadratis femoris
FUN: lateral rotation and abduction of femur at hip joint
quadratis femoris
O: ischium just anterior to the ischial tuberosity
INS: quadrate tubercle on the intertrochanteric crest of proximal femur
INN: nerve to quadratis femoris
function: lateral rotation of femur at hip joint
gluteal minimus
O: ilium between inferior and anterior gluteal lines
INS: greater trochanter
INN: superior gluteal nerve
FUN: Abduction and stabilisation of the hip + medial rotation of thigh
Gluteal medius
O: ilium between anterior and posterior gluteal lines
INS: greater trochanter
INN: superior gluteal nerve
FUN: abduction and stabilisation of hip + medial rotation of thigh
Gluteal maximus
O: 1- Faschia covering gluteus medius
2- ilium behind posterior gluteal line
3- faschia of erector spinae
4- dorsal surface of lower sacrum
5- lateral margin of coccyx
6- external surface of sacrotuberous ligament
INS: iliotibial tract of fascia lata + gluteal tuberosity of proximal femur
INN: inferior gluteal nerve
FUN: extension of femur at hip joint + stabilisation of hip and knee joint + lateral rotation and abduction of thigh
Tensor faschiae latae
O: between the anterior superior iliac spine and tubercle of crest of ilium
INS: iliotibial tract of faschia lata
INN: Superior gluteal nerve
Function: stabilisation of knee in extension
