More Severe Preoperative Kellgren–Lawrence Grades of Knee Osteoarthritis were Partially Associated with Better Postoperative Patient-Reported Outcomes in TKA Patients

• DOI: 10.1055/s-0038-1635114
• Publication Date: 2018-02-28T18:45:44Z
• Authors: Suzanne Witjes; Koen Koenraadt; Ruud Aarts; Thomas Weert; Rutger van Geenen; Alexander Hoorntje
• Keywords: Ceiling effect; Patient-reported outcome; WOMAC

Abstract Total knee arthroplasty (TKA) is a successful procedure, although up to 20% of patients remain dissatisfied. Preoperative identification appropriate TKA candidates essential for improving satisfaction. This study investigated if preoperative radiographic severity was associated with postoperative pain, function, and quality life after TKA. We performed cross-sectional cohort including 327 patients. Radiographic determined by two independent radiologists using the Kellgren Lawrence (KL) score. The Knee Injury Osteoarthritis Outcome Score (KOOS), New Society (New KSS), Anterior Pain (AKPS) were collected. evaluated association between KL grade patient-reported outcome measures (PROMs) use regression analysis techniques. Out 228 responders, 195 completed questionnaire sufficiently. Forty-seven classified as grades 1 2, 144 3 4. inter-observer reliability both substantial (ϰ = 0.67). After adjusting age, sex, body mass index (BMI), KSS subscales symptoms expectations, KOOS subscale significantly higher in 4 group. However, neither remaining AKPS nor change scores differed groups. Thus, more severe osteoarthritis (OA) resulted better outcomes TKA, this not observed all PROMs. new PROMs, such KSS, could be reliable because lower ceiling effects than KOOS. Investigating value additional methods assess (such semi-flexed radiographs MRI) imperative reliably identify OA.