Hip PBT Piloted Bone Trephine

Removal Instrument Set article no. 710020 Handle with locking pin article no. 710000 Extraction tube inner - Ø 8 mm Tube-set (sterile packaging) single-use article no. 710021 Filling tube Tissue protection tube inner - Ø 11 mm length 150 mm article no. 710005 Curette for sampling length 250 mm width 5.5 mm article no. 710006 1.) Guide wire drill Ø 3.2 mm length 280 mm article no. 900307 1.) Drill Ø 9 mm annulated Ø 3.8 mm c length 280 mm article no. 900308 1.) Hammer (optional) weight 240 g Ø 30 mm length 190 mm article no. 900461 1.) Ring curette (optional) oval, 20° cranked length 170 mm article...

Immersion basket (without instruments) article no. 900312 1.) PBT Piloted Bone Trephine by Prof. Dr. med. Stefan Landgraeber 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...

Using the 9 mm drill bit, overdrill the guide wire, opening only the cortical bone. Introduce the insertion aid (introducer) into the extraction tube, then insert both into the bone via the guide wire. The extraction tube already reaches the cancellous bone at this point. Replace the introducer with the handle and lock it in position.

Drive the extraction tube further into the bone with hammer blows to the head of the handle. The guide wire should be in the centre of the extraction tube here. Drive the extraction tube forward as far as the transition between the femoral head and femoral neck so that as much cancellous bone as possible can be extracted. By turning the handle, the cylinder of cancellous bone is released and removed.

The cancellous bone tissue is ejected proximally from the extraction tube by means of the pusher. Continue drilling with the 9 mm drill via the guide wire and then remove the necrotic bone. The necrotic bone is removed using a curette.

Insert the filling tube into the drill channel by means of the introducer. Insert the morcellised cancellous bone into the filling tube`s window which is outside the bone. Using the pusher, press the cancellous bone through the filling tube into the femoral head. After impaction of the cancellous bone, the cavities left in the femoral head and by the drilling channel can be filled with bone substitute material if required.

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