Material and Method: This is a prospective study that included 32 patients with closed posteromedial tibial plateau fractures who had undergone open reduction and internal fixation through a posteromedial approach by plate and screws between August 2017 and December 2020. Reconstruction plate or semi tubular plate was used if lag screw was not possible. Drug therapy was given as per standard protocol and suture was removed on 12 post-operative day.

Result: As per Merle D’ Aubignĕ and Postel Modified Score after surgical treatment of unstable fracture of acetabulum outcome was excellent in 10(31.25%). The outcome was good in 14(43.75%), fair in 4(12.5%) and poor in 4(12.5%).

Conclusion: From our study we can conclude that fracture of acetabulum was common in young patient with high energy impact. The outcome was good in 14(43.75%), fair in 4(12.5%) and poor in 4(12.5%). Anatomical reduction was achieved in 14 (43.75%) patients. Reduction was imperfect in 12 (37.50%) patients and poor in 6(18.75%).