Femoral implant explantation chisel

A femoral implant explantation chisel 10 for loosening a femur-implant medial interface during hip revision surgery comprising an elongate shaft 12 having a handle end 14 and a cutter end 16. The elongate shaft 12 comprising an implant-contacting guide surface 24 which extends along at least part of the elongate shaft 12 from the cutter end 16 for guiding the chisel 10 along a femoral implant to be extracted. The chisel 10 also comprises a cutter 18 which projects from a longitudinal edge of the implant contacting guide surface 24. The cutter 18 having an arcuate cutting edge 22 at or adjacent the cutter end 16 which extends laterally of a longitudinal extent of the elongate shaft 12. The guide surface 24 may be planar and may extend along a majority or all of the shaft 12. The shaft 12 may include a bone facing surface along the majority or all of the shaft 12. The curvature of the cutting edge 22 may have a constant radius. The cutter end 16 may be tapered, bevelled or chamfered. A method of loosening or separating a femoral implant using the femoral implant chisel 10 is also provided.