1. Anatomy
of the Pelvis and Hip

2. Bony Anatomy of the Hip
Hip is formed by the junction of the femur and the pelvic girdle
This articulation, formed by the head of the femur and the acetabulum, is the strongest and most stable joint in the body.
Standing on one foot: 3x-4x BW Jogging: 8X BW ea

3. Bony Anatomy of the Pelvis
Pelvis is formed by 2 pairs of 3 fused bones: the Ilium, Ischium, and Pubis.
These 2 sets of innominate bones are joined anteriorly by the pubic symphysis
The sacrum fixates the spinal column to the spinal cord, and is responsible for stabilizing the pelvis
The acetablum face down and out depression in the bone that accepts the head of the femur within its fossa
The labrum is a thick ring of fibrocartilage that lines the acetabulum and deepens the articulation by approx. 21%. The labrum is thicker/stronger superiorly than inferiorly

4. Bony Anatomy of the Pelvis

5. Sacrum: 4 fused spinal processes

6. Muscular Anatomy
Muscles of the hip have multiple layers; many of the same muscles that acted on the knee, act on the hip

7. Quadriceps Group: Powerful hip flexor (most powerful when knee is flexed)
Sartorius: Flexion, AB-duction, Ext Rot
Iliopsoas Group: Psoas Major, Psoas Minor, Iliacus – primary hip flexors
Adductor Group: Adductor Longus, Adductor Magnus, Adductor Brevis, Pectineus, Gracilis
Abductor Group: Gluteus Medius, Gluteus Minimus (both muscles also medially rotates thigh)
Gluteus Maximus: Extends and laterally rotates thigh
Piriformis: Extends, laterally rotates, and abducts thigh

8. Muscles of the Pelvis

9. Femoral Triangle
Femoral Triangle: Formed by Inguinal ligament (superiorly), Sartorius (laterally), and Adductor Longus (medially) contains blood and nerve supply as well as lymph nodes that become swollen with lower limb infection

11. ROM Hip Flexion and Extension:
Flexion: 120 to 130
Extension: 10 to 20
0 is considered neutral
Moving leg forward = flexion moving leg backward = extension

12. ROM Hip Abduction Hip Adduction Abduction and Adduction Abduction: 45

13. ROM Internal and External Rotation Internal: 45 External: 50
Left: Internal Rotation
Right: External Rotation

14. Later View: Palpations