Psychometric Evaluation Of The Patient's Knee Implant Performance (PKIP) Questionnaire For The Assessment Of Primary Total Knee Arthroplasty.

PKIP Description • Newly developed patient-reported outcome (PRO) measure • Assesses knee implant functional performance • For use with patients before and after primary total knee arthroplasty (TKA) • Assesses factors that lead to patient dissatisfaction and describes unmet needs in knee functional performance • Addresses stability, motion, satisfaction, and confidence with knee implant • 24 items, each employing a 5-, 6-, or 11-point ordinal response scale, with higher values indicating better knee stability (except for two items that are reverse scored)