The technique of percutaneous autologus bone marrow injection (ABI) has been used for the management of fractures with delayed and non unions since a long period of time. From September 2015 to December 2017, 18 patients were treated with ABI. Among the 18 patients, fracture humorus–2, fracture both bones forearm–6, fracture femur–4 and fracture tibia–6 cases. The time of presentation to hospital after injury was from 2 weeks to 10 weeks (Average 8 weeks). Depending on the fracture pattern, duration of previous definitive internal fixation and conservative treatment duration, all the patients suspected to be cases of delayed union were given ABI. The average time of bone union after ABI was 6 to 16 weeks depends on age, habits, fracture pattern, simple/compound fractures and duration of fracture. All the patients were evaluated during the study period and found sound bony union in 14 cases without any  complications. Two cases of fracture Tibia G–A type II were not united with ABI and open cancellous bone grafting done.