Pelvic girdle moves to put acetabulum in a favorable position to move femur

Stabilize

Attaches upper body to lower body

Distributes weight

Supports weight

1. Ilium  

2. Pubic Bone  

3. Ischium  

4. Iliac Crest

5. Pelvic Brim  

6. Ischial Spine  

7. Acetabulum

16. Pubic Symphisis

1. Ilium   2. Pubis   3. Ischium   4. 5. Ischial Tuberosity

6. Ischial Spine   7. Acetabulum    8. Obturator Foramen

9. Posterior Superior Iliac Spine  

10. Posterior Inferior Iliac Spine

11. Anterior Superior Iliac Spine 

12. Anterior Inferior Iliac Spine

13. Greater Sciatic Notch

14. Lesser Sciatic Notch

Neutral, Posterior (tuck butt) anterior (squat position)

Lateral Tilt (Named for down side)

Rotation of pelvis: Can cause internal or external rotation of femur

   Lumbosacral Joint

   Hip Joints

Little motion between sacrum and ilium

Closed: moves as one unit

Primary movement of pelvis initiated in pelvis

Secondary movements are associated with motion of trunk or thighs

Muscles of hip joint

Anterior

Iliopsoas

Pectinaeus

Rectus Femoris

Sartorius

Tensor Fasciae Latae

Muscle of Hip Joint

Posterior

Biceps Femoris

Semimembranosus

Semitendinosus

Gluteus Maximus

6 Deep outward rotators

   Obturator Externus

   Obturator Internus

   Gemellus Superior

   Gemellus Inferior

   Quadratus Femoris

   Piriformis

Muscles of Hip Joint

Medial

Adductor Brevis

Adductor Longus

Adductor Magnus

Gracilis 

1. Neck of femur             2. Head of Femur

3. Lesser Trochanter       4. Linea Aspera

5. Fovea Capitis              6. Intercondylar Notch

7. Medial Condyle           8. Medial Epicondyle

9. Lateral Epicondyle     10. Patellar Surface

11. Lateral Condyle       12. Greater Trochanter