1. JOINTS - a place where bones meet
A. Classifications
1. Immovable - skull
2. Slightly moveable (vertebral column)

2. a. ball-and-socket (shoulder, hip)
3. Freely moveable
a. ball-and-socket (shoulder, hip)
b. Hinge (elbow)

3. joints, cont...
c. Pivot (attaches skull to head)
D. Gliding (wrist)

4. joints, cont...
e. Saddle (EX: thumb)

5. 2. Ossification - replacement of cartilage w/bone
1. Some always present
2. Ossification - replacement of cartilage w/bone
3. Bursae - fluid-filled sacs that lubricate some freely moveable joints

6. Diseases & Disorders
Bursitis is an inflammation of the bursa, causing pain in the body's joints.
Osteoarthritis, also called degenerative joint disease, occurs when a joint wears out.

7. Osteoporosisis a disease resulting in the loss of bone tissue
Scoliosis is a side-to-side curve of the spine.

8. FRACTURES
Leukemia affects the production of red blood cells.