| http://www.w3.org/ns/prov#value | - The invention is a surgical retractor apparatus or assembly and its method of use, the surgical retractor assembly having selectable extension members that are mounted or affixed at, on, to or adjacent the distal end of a tubular retractor member, or the ends or sides of a spreadable blade retractor, such that the distal profile or configuration can be altered to better match the contour of the bo
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