<p class="abstract"><strong>Background:</strong> <span lang="EN-IN">Fractures of the forearm bones are very common. The most common form of stabilization is plate and screw fixation. The role of Intramedullary nailing of fractures of the shafts of the adult radius and ulna is still to be defined. This study was perform to analyze anatomical and function outcome of the patients treated by Talwarkar square nail.</span></p><p class="abstract"><strong>Methods:</strong> <span lang="EN-IN">We evaluated 46 patients (29 males and 17 females) had fracture both bone forearm treated by intramedullary nail. We analyzed patients in two broad group one with close fracture or grade I, II open fracture (34 patients) and other have open fracture grade IIIA or IIIB (12 patients). First group patients further analyzed weather close (22 patients) or open reduction (8 patients) required. Functional outcome was calculated by Grace and Eversman system</span>.<strong></strong></p><p class="abstract"><strong>Results:</strong> <span lang="EN-IN">Out of 32 patients of close fracture or open grade 1 or 2 fracture, 29 (90.62%) have excellent or acceptable result. All the patients (100%) in whom close reduction succeeds achieved excellent result. 22 (64.70%) patients close nailing possible.12 patients in whom open reduction required 9 (75%) goes into union. Close nailing have overall success rate is 90.62% where it fail and open nailing require success rate bring down to 75%.. </span></p><p class="abstract"><strong>Conclusions:</strong> <span lang="EN-IN">IM nailing gives satisfactory results. Advantages of close nailing are- early union, low incidence of infection, small scars, less blood loss, short operating time with minimal surgical trauma, easier implant removal. Even though plate and screw fixation is the gold standard for stabilization of both bone forearm fracture but intramedullay implant can be used in selected cases with good result. To achieve acceptable result – early surgery, proper selection of the case, pre-operative planning, proper assessment of diameter, length and radial bowing of the nail, is required.</span></p>