| 摘要 |
Shrouds for use with an implant in order to allow a surgeon to determine when the implant has been inserted into the femoral canal (or other bone as applicable) a proper distance during implantation. Such a shroud is useful to ensure that the patient's limb after prosthesis implantation is the correct length. The shrouds described have a distal surface which, when properly positioned relative to the implant, indicate proper insertion distance, such as by abutting a portion of the femur upon reaching correct insertion distance. The shrouds may contain a cavity which receives all or part of the neck or taper of the implant in order to position the distal surface correctly. The shrouds described can also help determine correct version of the implant, retain cement in the bone canal or cavity during implantation, pressurize the cement, and protect surfaces of the implant during the implantation.
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