
Background: Since intra-articular prostheses advanced in terms of quality and longevity, monitoring and evaluation of the results of joint arthroplasty is necessary. This study aimed to evaluated the short-term outcomes of total hip arthroplasty (pain and function) in patients with osteoarthritis of the hip in two orthopedic center, Imam Khomeini and BooAli Sina hospital in Sari, 2011-2015 Materials and Methods: This is a retrospective (surgery documents) and prospective (outcomes) study to evaluate hip pain and function after THA surgery by using the Harris Hip. Results: The average Harris scores was 85.87 ± 12.18. Harris score significantly higher in BooAli orthopedic center, P = 0.04. Harris score was significantly lower in 2011 than the other years P <0. 0001. A significant inverse association was observed between age and Harris score r = -0.168, P = 0.015. Conclusion: It seems that hip replacement in patients with arthritis and degeneration is not only the effective treatment but also desirable option for increased satisfaction and enhanced quality of life and daily functioning of patients.