Objective To analyze the choice of implant materials,key points of operative proce- dures,prevention and management of postoperative complications in patients treated with cranioplasty. Methods Two hundred and twenty six patients with craniocerebral trauma underwent cranioplasty with different implant materials.Attention should be paid for the purpose of not tearing or injuring the dura ma- ter during operation.To take the dura mater up to the implant material and the edge of the bone flap,and put drainage under the scalp flap before closure of the incision.Results The clinical symptoms and neural function were improved in 146(64.6%)patients postoperatively.Postoperative complications mainly were infection,fluid collection and hematoma in the operative region.Follow-up showed the occur- rence of displacement or collapse of the implant materials in some patients.Conclusion Timely cra- nioplasty can not only resolve cosmetic problems but also improve clinical symptoms and neural function. The causes of postoperative complications are mainly related with the operative procedures and the materi- als used.

Objective To investigate and evaluate the technique of microsurgery,for the treatment of the large and huge meningiomas of the sphenoid wing. Methods Fifty-eight patients were finally diagnosed by CT and/or MR in this series. The sphenoid wing meningiomas were from 4 cm×3.5 cm×3.5 cm to 11 cm×10 cm×8 cm in volume,and were located at outside sphenoid wing in 28 and at the inner in 30,and were spherical in 53 and en plaque in 5.The microsurgery for resection of the tumors was done through a cranio-orbito-zygomatic or craniozygomatic approach in 10, and through a modified pterional approach in 48.Results Total resection was achieved in 52.No death occurred in the group.Follow-up of 6 months to 9.5 years showed obvious nervous function impmvement in 49 and regrowth of the tumor in 8. Conclusions Based on the volume and development of the tumor,it is very imprtant for improving merapeutic Outcome to choose appropriate operative approach, get rid of the tumor piece by piece,and protect the nerves and vessels intraoperatively.