Homeostatic Imbalances of the Skeletal System Osteoarthritis

I. Bone Fractures Femur Fracture Intro video

Radius fracture and dislocation of ulna

Humerus Fracture

Fracture of Humerus Fracture of Femur

Fracture of the Radius Skull Fracture

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

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

Osteoarthritis of the hands

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

Rheumatoid Arthritis

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

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

Rickets Family