Comparative functional outcomes of resurfacing of Patella in patients undergoing Posterior stabilized versus Cruciate retaining Total Knee Arthroplasty: A non-randomized Clinical Trial

AIM- To compare functional outcomes of patellar resurfacing between PS and CR TKA in patients undergoing primary TKA

Methods- A non randomized Clinical trial at tertiary center including 122 patients fulfilling inclusion criteria. Patients were allocated sequentially into four groups. Outcomes assesed preoperatively, at 6weeks and at 6months.

Results- Patellar resurfacing significantly increased surgical duration. KOOS scores showed consistent postoperative superiority in resurfacing groups at both follow ups with maximal improvement in PS resurfacing patients. WOMAC and VAS scores improved significantly without significant intergroup differences. ROM at 6 weeks and 6months was significantly higher in PS and PS resurfacing cohorts. Kujala scores were significantly higher in resurfacing groups at both follow ups, with maximal improvement in PS resurfacing patients.

COnclusion- Patellar resurfacing combined with PS design provides modest early benefit in ROM, patellofemoral function and KOOS outcomes. However by 6 months, overall functional recovery is similar across all groups. All surgical approaches yielded substantial pain relief and high patient satisfaction