Acetabulum
1. Y-shaped epiphyseal cartilage
2. Start to ossify at 12 years, Fuse 16-17 years
3. Acetabular notch is at inferior
4. Nonarticular fossa, thin related medially to obturator internus
5. Pad of fat, proprioceptive nerves
1. Y-shaped epiphyseal cartilage
2. Start to ossify at 12 years, Fuse 16-17 years
3. Acetabular notch is at inferior
4. Nonarticular fossa, thin related medially to obturator internus
5. Pad of fat, proprioceptive nerves