Comparision Of Short-term Effectiveness Of Unicompartmental Knee Arthroplasty And Total Knee Arthroplasty For Medial Compartmental Knee Osteoarthritis

Objective To evaluate the short-term effectiveness of unicompartmental knee arthroplasty(UKA)and total knee arthroplasty(TKA)for medial compartmental knee osteoarthritis,and provide clinical evidence in operation scheme selection.Methods From January 2011 to January 2016,45 patients with medial compartmental knee osteoarthritis were treated by UKA,including 21 males and 24 females with average of 64 years(range 52-78years);and randomly selected 45 TKA patients,including 18 males and 27 females with average of 63 years(range 52-75years)in the same period in our hospital.Two groups were compared according to the time of operation,amount of bleeds,postoperatve blood loss,average stay.The American Hospital for Special Surgery(HSS)score,visual analogue scale(VAS)score,range of motion(ROM)were also compared at 7 days,6month,and the last follow-up.Results All patients were well followed up by 6 to 50 months(mean of 25 months),no prosthetic loosening,dislocation,lesions of contralateral compartment joint developed.Through statistics analysis,The UKA group had obvious advantage to TKA group in the time of operation,amount of bleeds,the rate of transfusion,postoperatve blood loss,average stay,HSS score,VAS score,ROM at 7 day and 6 months(P<0.05).But there were no significant differences in the HSS score,VAS score,ROM according the last follow-up(P>0.05).Conclusions The UKA has better short-term effectiveness than TKA in the treatment of medial compartmental knee osteoarthritis,UKA had advantages such as short time of operation,less bleeds and good function recovery.