The role of Bone Morphogenetic Protein-7 (Osteogenic Protein-1®) in the treatment of tibial fracture non-unions -: An overview of the use in Belgium

The evolution of a fracture non-union is complex; treatment strategies are therefore challenging. The use of BMP-7 could be an interesting adjunct. We present an overview of the monitored use of this product in tibial non-unions in Belgium. Our retrospective data covers 53% (62 patients) of the cases in which it was used between 2001 and 2006. Questionnaires were sent to surgeons who had been using BMP-7 (OP-1) in tibial non-unions in Belgium. Of 55 surgeons contacted, 27 who had been treating 62 patients with a non-union of a tibial fracture responded. These fractures were most commonly treated with an external fixator and 50% of them had already received some form of graft material. Non-union was diagnosed after a median of 365 days (range, 123-1212). Treatment with OP-1 resulted in a clinical healing rate of 79.6% and a radiographic healing rate of 84.9%. Union was reported after a median of 230 (32872) days clinically and 232 (32-739) days radio-graphically. We documented a large number of cases of use of BMP-7 in tibial non-union in Belgium. The healing rates of around 80% are comparable to other reports on success rates with BMP-7. Many cases presented originally with open fractures, infected wounds or fractures with bone loss. This makes the reported results even more promising. Further studies are needed to analyse the socio-economical value of this relatively expensive treatment.