Histology of the femur after cancellous impaction grafting using a Charnley prosthesis.

We report the histologic findings of a retrieved femur 6 months after a cemented hip revision with a Charnley standard prosthesis and impaction of morselized allograft. Most transplanted areas were revascularised. In the proximal femur there was new bone formation peripherally, but a substantial amount of fibrous stroma embedding graft pieces closer to the cement. In the diaphysis new bone formation had proceeded to within less than 0.5 mm of the cement.