PBT

There are various approaches in the treatment of osteonecrosis of the femoral head which use autologous cancellous
bone. Many of these procedures involve drilling the area of necrotic bone with a 9 mm drill (core decompression), and
some also include additional evacuation of the necrotic bone.

The Piloted Bone Trephine is a useful supplementary instrument for core decompression which enables simpler and
safe removal of cancellous bone from the femoral neck without further OP trauma.

As in the core decompression procedure, a guiding wire is inserted, beginning at the tuberculum innominatum and
extending into the area of necrotic bone. Using a cannulated 9 mm drill only the cortical bone is opened and the
cancellous bone harvested. The special design of the hand grip ensures that the Piloted Bone Trephine is positioned
accurately via the guiding wire in the targeted area of the femoral head. The core decompression procedure, and
evacuation if required, can then be continued in the usual way.