This study was done to determine the effectiveness of percutaneous autologous bone marrow injection in fracture healing and to determine if centrifuged bone marrow is more effective in bone healing as compared to uncentrifuged marrow.

This is a randomized interventional trial of 106 patients who had bone marrow injection. The study was done in 2 parts. In the first part, 51 patients were divided into three groups – a) Fresh fractures,(within 6 weeks of injury) b) Delayed union – (8 to 12 weeks after injury) c) Non union – more than 16 weeks after injury. All patients in the first part of the study underwent percutaneous autologous bone marrow injection and were followed up at 6,8,10 and 12 weeks and every 4th week thereafter. Forty seven out of 51 patients united. The second part of the study was done to compare centrifuged and uncentrifuged bone marrow injections. Fifty five patients having either tibial or femoral fractures were divided into two groups, centrifuged and uncentri-fuged and appropriate marrow injection was done. All patients were followed up every 6 weeks till 36 weeks. 48 patients out of 55 united. Equal number of patients united in the centrifuged and uncentrifuged group.

We conclude that percutaneous autologous bone marrow injection is a simple and effective tool which can be used for fracture healing and centrifugation of bone marrow yields no added advantage in bone healing.