Introduction: Fracture healing is a form of wound healing that involves bone regeneration and leads to the restoration of skeletal integrity. Despite recent developments fracture stabilisation and understanding of biological healing processes, delayed union remains a challenging clinical condition. Bone marrow being abundant in osteoprogenitor cells is being tried to enhance the fracture healing. This study emphasizes the proficiency of bone marrow injected at the fracture site with delayed union and to reduce the time of morbidity for patients who are at the risk of development of non-union. Aim: To study the union rates and complications of percutaneous bone marrow injection at the site of delayed union of long bone fractures.

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