| 摘要 |
<p>A femoral head prosthesis (110) comprises an articulating surface (112) which is more than hemi spherical; an internal recess (114) having a longitudinal axis defining a pole P of the articulating surface (112) the longitudinal axis passing through the centre of curvature of the articulating surface (112); a first edge (116) which constitutes a posterior edge in use and a second edge (118) which constitutes an anterior edge and/or an antero inferior edge in use. The first edge (116) is further from the pole P than the second edge (118). Also provided is a femoral prosthesis comprising a femoral head and a femoral implant comprising a femoral stem and a femoral head. The prostheses and implants of the invention find use in total hip replacements.</p> |
