William R Muirhead

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This study evaluated the effectiveness of small intestine submucosa used as a graft to fill surgically created meniscal defects in a large animal model. Four goats underwent unilateral interior subtotal meniscectomies (approximately 70%) within the avascular portion of the medial meniscus. The contralateral meniscus acted as a control. Grafts of porcine(More)
OBJECTIVES External ventricular drains (EVDs) are commonly placed freehand using targeting landmarks unchanged since the pre-CT era; it is known to be an inaccurate procedure. To our knowledge, this is the first study to assess the geometric reliability of specific trajectories in a three-dimensional model. DESIGN Three-dimensional volume reconstruction(More)
PURPOSE The present investigation is a preliminary study designed to evaluate the use of a collagen-based biomaterial, chemically unaltered porcine small intestine submucosa (SIS), as a scaffold for meniscal tissue regeneration. TYPE OF STUDY Basic research. METHODS Surgical defects were created in the lateral menisci of 12 mature New Zealand white(More)
Medical ethical analysis remains dominated by the principlist account first proposed by Beauchamp and Childress. This paper argues that the principlist model is unreflective of how ethical decisions are taken in clinical practice. Two kinds of medical ethical decisions are distinguished: biosocial ethics and clinical ethics. It is argued that principlism is(More)
My dentist wants me to see him for a check-up every 6 months. Or at least he would if I had one. Like 44.6% of people in the UK I haven’t got an NHS dentist and I object to paying for one of the few things the government still tells me I should get for free. In fact, the last time I did get to see the dentist it was privately and this particular practice(More)
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