Background: In THR the surgeon removes and replaces both the ball and socket with prostheses. Most canine hip replacement prostheses have a metal ball at the top of the femur that fits into a dense plastic socket.

Aim: To compare the results of total hip replacement with femoral head ostectomy in dogs

Methods: We have tried to review the results of both procedures in literatures and compare them to advise to select the proper procedure in your cases. Conclusion: we concluded that, in dog without concerning it’s size, suffering hip disease and pain, performing Femoral Head Ostectomy (FHO) instead of Total Hip Replacement (THR) is not sufficient for restoring all hip mobility and comfort. Incidence of pain, movement restrictions, limb shortness and muscle atrophy were more common in FHO cases than THR cases Keywords: Total hip replacement, femoral head ostectomy, dogs,