Mid-term Survivorship Analysis of Personalized Kinematic Total Knee Arthroplasty: A Single-Surgeon and Single-Centre Prospective Study Among the Indian Population.

Background: Total knee replacement surgery for knee osteoarthritis has increased tremendously during the past few decades. But still, 1519% of the patients are not satisfied with the surgical outcome. Therefore, alternative ways of aligning a TKR have gained interest. We have designed our own technique of personalized kinematic TKR with conventional instruments. This is the first mid-term survivorship analysis that has been done among the Indian population. Methods: A prospective study was done on the patients treated for knee osteoarthritis by a single surgeon in a single center till March 2016. All the 124 knees (102 patients) were operated by our technique of personalized kinematic TKR where the thickness of distal femoral and tibial cuts was calculated by measuring cartilage and bone wear and calipered resection technique was carried out with conventional instruments. Results: In our study, all the patients (except one) were followed-up for a mean duration of 5.8 years (range 5-7.5 years). Oxford Knee Score increased from 25.82 ± 6.01 preoperatively to 45.14 ± 5.98 postoperatively and FJS improved from 14.53 ± 4.06 preoperatively to 93.14 ± 12.21 at 1-year follow-up and none of the patients underwent revision surgery. Conclusion: This prospective study shows that personalized kinematic total knee arthroplasty in the Indian population results in high satisfaction rates as well as good clinical outcomes with no revisions at minimum 5-year follow-up.