Biomedical subjects
Publications and source records attributed to G Bannister.
Bone-cement lucency and migration into varus position, expressed as failure modes lb and IV, appear to be unfavorable. The majority of prostheses carry a collar that rests on cement, and in such implant types, migration of up to 4 mm within the cement mantle does not appear to be associated with an increased risk of revision.
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A review of 66 cases and a survey of the literature indicates that survival rates of around 90% should now be expected from patients with subdural empyema. Factors affecting the outcome are discussed. In addition to prompt surgical treatment and appropriate antibiotic therapy, the most important step seems to be extensive craniotomy and direct removal of subdural pus, particularly from the interhemispheric fissure. Treatment through burr holes is not acceptable. In the absence of a culture of the organisms and known antibiotic sensitivities, chloramphenicol is recommended as the drug of choice.