Efficacy analysis of short and mid-term effects of total and unicompartmental knee arthroplasties in treating single compartmental osteoarthritis of knee

Objective To investigate the short and mid-term effect of total knee arthroplasty (TKA) and unicompartmental knee arthroplasty (UKA) in treating single compartmental osteoarthritis of knee joint. Methods A retrospective study was conducted on the data of patients with osteoarthritis of knee single compartment treated in Kaiping Central Hospital from March 2013 to March 2015. Analysis was conducted on the cases of single compartmental osteoarthritis, patients with psychosocial or systemic lesions, or previous surgical history were excluded. Independent sample t test were used to analyze the pre- and post-operative Visual analogue score (VAS), Hospital of Special Surgery (HSS)score, the Western Ontario and McMaster Universities arthritis index(WOMAC), forgotten joint score(FJS) and range of knee joint motion. Results Twelve patients were finally recruited in the TKA group and UKA group, respectively. The postoperative indicators gradually improved compared with preoperative results in both groups, but the difference between the results of both groups at last follow-up were not significant(P>0.05). Joint forgetting score of UKA group (60.3±2.0) was significantly better than those of TKA group(58.1±3.8) at one year after surgery (t= 9.059, P 0.05). Conclusion Both UKA and TKA could relieve the patients’ symptoms and improve knee function in the treatment of single compartmental knee joint osteoarthritis, and the mid-term curative effects are basically identical. Key words: Arthroplasty; Knee; Osteoarthritis; Therapeutics