Comparison of the short-term effect of unicompartmental knee arthroplasty and total knee replacement in the treatment of unicompartmental osteoarthritis

Objective:To compare the short-term effects of unicompartmental knee arthroplasty(UKA) and total knee replacement(TKA) in the treatment of unicompartmental osteoarthritis.Methods:Among 24 patients with unicompartmental osteoarthritis,8 cases and 16 cases were treated with UKA and TKA,respectively.The VAS and HSS scores before operation and the end of following up between two groups were compared.Results:The prosthesis of 1 case in TKA group was taken out because of infection.No infection,loosening of the prosthesis,jiont renovation and lower extremity venous thrombosis during the following up period in two groups were found.The VAS and HSS scores in all cases were significantly improved after operation(P<0.01).At the end of following up,the VAS score of postoperative pain relief in TKA patient was better than that in UKA patient(P<0.05),the difference of HSS score between two groups was not statisticaly significant(P>0.05).Conclusions:The short-term effects of UKA and TKA in the treatment of unicompartmental osteoarthritis are similar.The postoperative complication of UKA is little,and the postoperative pain relief of TKA patients is more obvious.