1. Homeostatic Imbalances of the Skeletal System Osteoarthritis

2. I. Bone Fractures Femur Fracture Intro video

3. Radius fracture and dislocation of ulna

4. Humerus Fracture

5. Fracture of Humerus Fracture of Femur

6. Fracture of the Radius Skull Fracture

7. II. Arthritis A. Osteoarthritis - video link video link - Chronic regeneration of the cartilage due to wear and tear

8. - often results in growth of extra bone tissue= bone spurs Osteoarthritis:

9. Osteoarthritis of the hands

10. B. Rheumatoid Arthritis 1) Autoimmune disease- immune system destroys cartilage 2) Scar tissue forms which ossifies, fusing bones 3) Can cause deformity and crippling video

11. Rheumatoid Arthritis

12. III. Osteoporosis - see animation see animation A. Bone thinning disease that can lead to fractures, especially the spine and head of femur B. Risk factors: 1) poor diet - calcium, vit. D 2) lack of exercise 3) smoking 4) menopause 5) small build 6) genetics

15. IV. Rickets -Bones fail to calcify -Due to lack of calcium and/or vitamin D Soft bones lead to bowed legs

16. Rickets Family