1. Objective To discuss the etiology of lunate avascular necrosis.

2. When the lunate was excised, the change of the stress on the carpal bones showed no regularity.

3. It could be considered that the lunate and triquetral bones play a key part in this complex injury, being the basis of the axial burst dislocation of carpal bones.

4. A common pattern is seen with scapho - lunate ligament tears that alter the normal wrist joint mechanics.

4. try its best to gather and build good sentences.

5. Methods Cryopreserved allogeneic lunate bone transplantation was applied to 6 cases of aseptic lunate osteonecrosis who were followed up more than 10 years.

6. Objective To improve the diagnosing level of lunate and perilunate dislocation through analysing X-ray finding and causes of missing diagnosis.

7. The primary sediment body is a lunate bar, convex seaward, with the coarsest sediment particles located landward of the bar crest.

8. The tuna tail is considered as a three dimensional lunate fin oscillating with the mode combined swaying and yawing in uniform flow.

9. Methods After the study of functional anatomy of wrist joint and intra-lunate micro-structure and wrist X-ray, we put forward the factors contributing to lunate avascular necrosis.

10. A review is presented of the results of treatment in 16 patients with 16 lunate dislocation or perilunate fracture-dislocations in 5 year.