• Matthew D Smith, Lyudmila Kishikova, and Joseph M Norris.
• Brighton and Sussex Medical School, BSMS Teaching Building, University of Sussex, Brighton, East Sussex BN1 9PX, United Kingdom. M.Smith1@uni.bsms.ac.uk
• Int J Surg. 2012 Jan 1; 10 (9): 450-2.

AbstractA best evidence topic in neurosurgery was written according to a structured protocol. The question addressed was: In patients undergoing craniostomy for the evacuation of chronic subdural haematoma, does the use of two burr-holes compared to one burr-hole improve clinical outcomes? A total of 238 papers were identified using the reported search protocol. Four of these articles represented the best evidence to answer the clinical question. The authors, date and country of publication, study type, patient group, outcomes and key results of these papers have been represented in a table. Three out of four studies showed that there was no significant difference in prevalence or rate of haematoma recurrence between two burr-hole craniostomy or one burr-hole craniostomy. Two studies demonstrated shorter hospital stay with two burr-hole craniostomy. Furthermore, one study showed increased rates of wound infection with one burr-hole craniostomy. Therefore, the clinical bottom line is that performing either two burr-hole craniostomy or one burr-hole craniostomy does not provide specific differences in patient outcome improvement following surgery for chronic subdural haematoma, however further research is required owing to the flawed methodology of existing studies.Copyright © 2012 Surgical Associates Ltd. Published by Elsevier Ltd. All rights reserved.

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