1. Methods: CT scan or exploratory trephination was carried out for the disease of acute brain injury getting progressively worse.

2. Conclusion Femoral head osteonecrosis can be treated with trephination decompression of femoral head and infusion of cell suspension into femoral head of rabbits.

3. Nail trephination or nail plate removal was used to be done for its treatment.

4. Methods: After anterior trephination osteotomy and decompression, long auto bone graft was obtained from the ilium and was grafted under traction.

5. Objective: To investigate the therapy method and effect with trephination and drainage for acute epidural hematoma.

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6. Method:41 cases of this disease were treated locally with MEBO after wound debridement and trephination and drainage, to promote granulation to cover the exposed bone substance.

7. Objectives To evaluate the feasibility of infusing cell suspension into rabbit femoral head after trephination decompression.

8. Conclusion Noncontact and nonthermal excimer laser penetrating keratoplasty can promote the quality of trephination, reduce the irregularity of grafts, and improve the effects of the operation.

9. Methods Retrospective analysis on the clinic dates of 28 cases with underwent trephination and drainage treatment for acute epidural hematoma in our hospital.

10. Method: Retrospective analysis on the clinic datas of 86 cases with trephination and drainage treatment for acute epidural hematoma in our hospital were reviewed.

11. During therapy, acute exacerbation can be relieved by analgesics, antibiotics or trephination.