Analysis of the Effect and Gait Difference of Oxford Unicondylar Arthroplasty and Total Knee Arthroplasty in the Treatment of Medial Knee Single Compartment Osteoarthritis
Objective:To investigate the efficacy and gait difference between Oxford unicompartmental knee arthroplasty(UKA)and total knee arthroplasty(TKA)in the treatment of medial unicompartmental knee osteoarthritis.Methods:60 patients with medial unicompartmental knee osteoarthritis admitted to our hospital from June 2019 to January 2023 were selected as the research objects.According to the surgical method,they were divided into a UKA group and a TKA group,with 30 cases in each group.The degree of knee pain,knee arthritis function,walking ability,joint balance ability during exercise,knee joint biomechanics,lower limb muscle activity and gait changes were compared between the two groups before and 3 months after treatment.Results:3 months after operation,the Visual Analogue Score of pain scores of the two groups were lower than those before treatment,and the difference was statistically significant(P＜0.05);the TKA group was lower than the UKA group,and the difference was not statistically significant(P＞0.05).At 3 months after operation,the pain,stiffness and joint function scores of the affected knee joint in the two groups were significantly lower than those before treatment(P＜0.05);there was no significant difference in the pain score of the affected knee joint in the WOMAC scale between the two groups(P＞0.05);the WOMAC scores of the affected knee joint stiffness and joint function in the TKA group were significantly lower than those in the UKA group(P＜0.05).At 3 months after operation,the 10-meter walk and timed up and go time of the two groups were shorter than those before operation,and the TKA group was shorter than the UKA group,and the difference was statistically significant(P＜0.05).At 3 months after operation,the Berg Balance Scale scores of the two groups were higher than those before operation,and the Berg scores of the TKA group were higher than those of the UKA group,and the difference was statistically significant(P＜0.05).At 3 months after operation,the hip flexion angles of the two groups were reduced when compared with those before operation,but the difference was not significant(P＞0.05);the landing knee flexion Angle and landing ankle dorsiflexion Angle in the two groups were significantly reduced when compared with those before operation,and those in the TKA group were significantly smaller than those in the UKA group(P＜0.05).At 3 months after operation,the EMG activities of biceps femoris,rectus femoris,vastus lateralis,vastus medialis,gastrocnemius medialis,tibialis anterior,and peroneus longus in the two groups were more than those before operation,and those in the TKA group were more than those in the UKA group(P＜0.05).The lateral gastrocnemius electromyography activity of the two groups decreased when compared with that before operation,the UKA group was less than that in the TKA group,and the difference was significant(P＜0.05).At 3 months after operation,the total gait cycle time of the two groups was shorter than that before operation,the step length of the affected side and the single support time of the affected side were longer than those before operation,and the maximum vertical force of the affected side was higher than that before operation,and the total gait cycle time of the TKA group was shorter than that of the UKA group,the step length of the affected side and the single support time of the affected side were longer than those of the UKA group,and the maximum vertical force of the affected side was higher than that of the UKA group,the difference was statistically significant(P＜0.05).Conclusion:Both TKA and UKA have better clinical outcomes in the treatment of medial unicompartmental knee osteoarthritis,but TKA is more valuable for the functional recovery of anterior cruciate ligament and posterior cruciate ligament than UKA.
Medial knee single compartment osteoarthritisOxford single condylar replacementTotal knee replacementClinical efficacyGait analysis
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