Muscles of the Hip (Groups, Origin, Insertion, Function)

Content
0:00 Introduction
0:25 Division of the Hip Muscles
0:50 Anterior Group: Iliopsoas Muscle
1:40 Psoas Minor
2:05 Posterior Group
2:17 Deep Posterior Muscles
2:33 Piriformis
2:57 Obturator Internus
3:18 Gemellus Superior/Inferior
3:37 Quadratus Femoris
4:06 Obturator Externus Muscle
4:48 Superficial Posterior Muscles
5:13 Gluteus Minimus
5:38 Gluteus Medius
6:00 Gluteus Maximus
7:00 Tensor Fasciae Latae

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Muscles of the Hip Joint
- Anterior Group [3]
- Posterior Group [10] - Deep + Superficial Layers

Anterior Group:
Iliacus Muscle
musculus iliacus
O: Iliac Fossa
Psoas Major
musculus psoas major
O: Vertebral Bodies of T12-L5
Iliopsoas Muscle
musculus iliopsoas
I: Lesser Trocheanter of Femur
trocheanter minor
F:
Flexion + Adduction of Femur
External Rotation of Femur
Flexion of Trunk

Psoas Minor
musculus psoas minor
- O: Vertebral Bodies of T12-L1
- I: Iliopubic Eminence
eminentia iliopubica
- F: Flexion of Trunk

Posterior Group:
Deep Muscles:
- ‘’Pelvicotrocheanteric Muscles’’
- Insert around greater trocheanter
- Maintain stability of the hip joint and posture
Piriformis
musculus piriformis
○ O: Anterior Surface of Sacrum (S2-S4)
I: Greater Trocheanter of Femur
trocheanter major
F:
External Rotation of Thigh
Abduction of Thigh
Obturator Internus
musculus obturatorius internus
○ O: Inner surface of Obturator Membrane
○ I: Greater Trocheanter of Femur
trocheanter major
F:
External Rotation of Thigh
Abduction of Thigh
Gemellus Superior
musculus gemellus superior
O: Ischial Spine
Spina ischiadicum
Gemellus Inferior
musculus gemellus inferior
O: Ischial Tuberosity
Tuber ischiadicum
I: Greater Trocheanter of Femur
trocheanter major
○ F: External Rotation of Thigh
Quadratus Femoris
musculus quadratus femoris
O: Ischial Tuberosity
Tuber ischiadicum
I: Intertrochanteric Crest
Crista intertrocheanterica
F:
External Rotation of thigh
Adduction of thigh
Obturator Externus
musculus obturatorius externus
O: External surface of
Obturator Membrane
I: Trocheanteric Fossa
Fossa trocheanterica
F:
External Rotation of thigh
Accessory flexion
Superficial Muscles [4]
○ Gluteal Muscles + Tensor Fascia Latae
○ Fasciliate standing up from a sitting position
○ Climbing Stairs
○ Prevent the hip from deviating to one side
Gluteus Minimus
musculus gluteus minimus
O: Gluteal Surface of the Ileum
between the anterior and
inferior glueal lines
I: Greater Trocheanter of Femur
trocheanter major
F:
Abduction of Femur
Anterior Fibers: Internal Rotation
Posterior Fibers: External Rotation
Gluteus Medius
musculus gluteus minimus
O: Gluteal surface of Ileum
between the anterior and
posterior gluteal lines
I: Greater Trocheanter of Femur
trocheanter major
F:
Abduction of Femur
Anterior Fibers: Internal Rotation
Posterior Fibers: External Rotation
Gluteus Maximus
musculus gluteus maximus
O:
Gluteal Surface of Ileum
(Behind posterior gluteal line)
Posterior surface of Sacrum and Coccyx
Sacrotuberal Ligament
Thoracolumbar Fasica
I:
Gluteal Tuberosity of the Femur
Iliotibial Tract
F:
Abduction + Extension of Femur
External Rotation
Tensor Fasciae Latae
musculus tensor fasciae latae
○ O: Anterior Superior Ilaic Spine
I: Continues into the Iliotibial Tract
Tubercle of Iliotibial Tract
F:
Tenses Iliotibial Tract to ‘’lock’’ the
knee joint
Flexion of Femur