ABSTRACT

Introduction: At present, the first choice for severe joint diseases is total knee arthroplasty, which can relieve joint pain, correct deformity, and improve joint function. This study aimed to assessment comparison of pain and Oxford score of patients who underwent TKA with two methods of mechanical and kinematic alignment techniques.

Method and Material: This study is a prospective clinical Trial study that was performed on patients who underwent total knee arthroplasty. Sixty-four patients with a definitive candidate of TKA scheduled for TKA were randomized into kinematically aligned TKA and mechanically aligned TKA. Data were collected by Visual analogue scale (VAS) questionnaire for pain and Oxford score questionnaire for pain and function of patient at one, twenty and ninety days after operation. For data analysis, SPSS 26 software and descriptive statistical methods of mean, Chi-square, Fisher's exact test, independent t-test, Paired T-test, one Way ANOVA and Repeated Measure test were used. P-value less than 0.05 were considered to be statistically significant.

Result: mean of VAS score showed a statistically significant difference between the Kinematic and Mechanical group so that in Kinematic group was statistically significantly lesser than Mechanical group in all three time after operation and the mean of Oxford score and its two domains including pain and function showed a statistically significant difference between the Kinematic and Mechanical group so that in Kinematic group was statistically significantly lesser than Mechanical group in its both two domains in 20 and 90 days after operation.

Conclusion: It seems that the kinematic method results in better function and less pain for patients versus mechanical method due to better alignment during surgery.