Introduction: Chronic subdural heamatoma is one of the commonest neurosurgical pathologies that require surgical intervention. Burr hole and drainage is the most frequent used surgical treatment.

Methods: A retrospective study of the clinical records of 93 patients managed surgically for chronic subdural hematoma using a burr hole and closed drainage system which spanned over three (3) years was conducted. Pre-operative clinical grading compared with clinical grading /outcome at discharge.

Results: Ninety percent of the patients had head trauma as the aetiology while hemiparesis/hemiplegia, headache and memory impairment are the three commonest modes of presentations in our study. More than 90% of the patients had good outcome.

Conclusion: Burr holes and closed drainage of chronic subdural heamatoma is simple, safe and effective treatment modality among our patients.

Keywords: burr-hole, drainage, subdural heamatoma.

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Dr Olabisi O. Ogunleye

Department of Surgery, Abubakar Tafawa Balewa University/Teaching Hospital, Bauchi, Nigeria