Comparative study of functional outcome of cemented and uncemented total hip replacement

Abstract

Background: To compare functional outcome of cemented and uncemented total hip replacement (THR). Materials and Methods: In this hospital based, randomized, comparative type of observational study, 25 patients were included in each group. Each patient examined thoroughly and underwent radiological assessment. Follow-up done at 6 weeks, 3 months, 6 months, and 2 years and pain score, Harris Hip Score (HHS), subjective complaints, and joint stability were recorded. Results: Mean age of the patient in cemented group was 60.64 years and in uncemented group was 59.72 years. Pain score was compared at each follow-up which came out significant at 6 weeks (P ≤ 0.05) and 3 months (P = 0.002) explaining better early bone integration with cemented THR. However, at 6 months difference in pain score between two groups was nonsignificant (P = 0.176). Difference in function score between cemented and uncemented group was significant at 6 weeks (P = 0.003) and 3 months (P ≤ 0.05) which later become nonsignificant at 6 months (P = 0.38). The difference of HHS between cemented and uncemented group was significant at 6 weeks (P ≤ 0.05) and 3 months (P = 0.011). This difference became nonsignificant at 6 months. HHS is further divided into four grading – poor (<70), fair (70–79), good (80–89), and excellent (90–100). Overall in our study, 88% of patients in cemented group showed excellent and good results and 84% in uncemented group showed excellent and good results. There was one case of excessive blood loss during surgery in uncemented group and one case of foot drop in cemented group. Conclusion: Cemented implants are cheaper than the uncemented implants. Better short-term clinical outcomes mainly improved pain and early pain-free full weight bearing was obtained from cemented fixation.

Keywords

• cemented total hip replacement
• hip replacement
• total hip replacement
• uncemented total hip replacement