A tool for separating an acetabular shell of a hip prosthesis from the surrounding pelvic bone includes a fixture which attaches to the acetabular shell and has a chisel guide mounted on it. A chisel associated with the chisel guide is curved to conform to the outer periphery of the acetabular shell,...http://www.google.com/patents/US7744602?utm_source=gb-gplus-sharePatent US7744602 - Acetabular shell removal tool
