1. Objective To study the mechanism of vertebral osteophyte formation.

2. Aim:To study mechanism of vertebral osteophyte formation.

3. Fig . 3 Osteophyte formed around prothesis, but no effect on joint activities 1 year after operation.

4. A detached osteophyte may have provided the primary nidus for this loose body.

5. A detached osteophyte may hae proided the primary nidus for this loose body.

6. The results suggested that the formation of osteophyte are correlate with biomechanical response such as stress force.

7. Conclusions:This result biochemically supports that the vertebral osteophyte arises from proliferating peripheral articular cartilage, which had been observed histologically.

8. The prevalence of osteoarthritis, and osteophyte for drinkers was higher than no drinking people.

9. Preoperative osteophyte height did not predict which patients developed postoperative dysphagia.

10. Objective:To study the relationship between the end-plate calcification and cervical intervertebral disc degeneration and vertebral osteophyte formation.

11. More advanced disease is manifested by severe joint space narrowing, marked osteophyte formation at the joint margins, dense sclerosis of subchondral bone, and subchondral cysts.

12. Results CT findings of AO joint degeneration included: formation of osteophyte, narrowing of joint space, transverse ligament calcification, and joint vacuum phenomenon.

13. Radiographic features of OA severity, joint space narrowing (JSN), a surrogate for cartilage loss and osteophyte (OST) formation, were assessed for the knee and ankle.

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14. Many patients who have persistent low backache might result from lumber vertebral osteophyte .

15. Group II contained 34 patients who had plates protrude greater than the height of the tallest preoperative osteophyte .

16. Group I contained 30 patients who had cervical plates protrude less than or equal to the height of the tallest preoperative osteophyte .

17. Some adjacent level degeneration may occur after cervical disk replacement, and the degeneration type is osteophyte formation in the adjacent level.

18. This section of the vertebral column shows prominent "lipping" of the vertebral bodies from osteophyte formation with degenerative osteoarthritis.

19. Its feature symptom is limitations of joint cartilage degeneration and new bones forming among joint edge and subchondral osteophyte.

20. Results. Radiographs revealed degenerative changes, such as disc space narrowing and irregularity, subchondral sclerosis, osteophyte formation, and hypertrophy of vertebral endplates in all groups.

21. Results Gross observation showed focal fibrillation on articular cartilage surfaces and significant osteophyte formation at lateral intercondylar notches of the distal femur.