ABSTRACT
OBJECTIVE: Variable materials have been used in cranioplasty of skull defects, of which autologous bone is the most ideal. The authors explore methods and clinical results of cranioplasty with frozen autologous bone. METHODS: Cranioplasty was performed using frozen autologous bone in 16 patients with skull defects between August 1997 and April 1999. Primary diseases were severe head injury in 14 patients and cerebral infarction in two patients, and all of them received decompressive craniectomy. Cranioplasty were done from 25 to 225 days after primary operation. The mean follow-up period was 34 months. RESULTS: There was no infection or epidural hematoma. During the follow-up period, autologous bone flap were fused firmly to the skull without absorptive evidences and delayed complications. It was satisfactory in all cases when considered aesthetic aspects. CONCLUSION: Cranioplasty using frozen autologous bone is safe and satisfactory method for repair of surgically induced skull defects.
Subject(s)
Humans , Cerebral Infarction , Craniocerebral Trauma , Decompressive Craniectomy , Follow-Up Studies , Hematoma , SkullABSTRACT
The authors report a case of recurrent expansile cyst formation after gamma knife radiosurgery(GKRS) for a cerebral arteriovenous malformation where the residual nidus might play an important role. A 28-year-old male patient underwent gamma knife radiosurgery for a left parietal lobe arteriovenous malformation which had manifested with generalized tonic-clonic seizure in November 1992. In March 1999, 76 months after GKRS, the patient presented with headache, dysphasia and right hemiparesis and the computed tomography(CT) and magnetic resonance(MR) image revealed a huge cystic lesion with enhancing nodule at the anterior wall of the cyst. Cerebral angiography showed a small residual nidus. Aspiration and drainage of the cystic fluid via a burr hole was performed and the symptoms improved. One year later, in March 2000, the symptoms recurred, and CT and MR image revealed a new huge cystic lesion anterior to the enhancing nodule. Surgical removal of the residual nidus was performed, and there is no recurrence of the cyst for two years till now.