Osteoarthritis and Cartilage Open
The longitudinal relationship between physical capacity and self-perceived physical functioning after total hip and knee arthroplasty
By Dennis J. van den Berg, Esther T. Maas, T. P. M. Vliet Vlieland and 22 others.
Abstract
Objective
To examine longitudinal within-person effects between capacity and self-perceived performance during postoperative physiotherapy in patients with total hip and knee arthroplasty (THA/TKA).
Methods
We performed a secondary analysis of a cluster randomized controlled trial on physiotherapy after THA and TKA using random intercept cross lagged panel models. Capacity was assessed with the 40-m fast-paced walk test (40 m FPWT) and the 30-s chair-stand test (30-s CST), and self-perceived performance with the Oxford Hip/Knee Score functioning subscale (OHS/OKS) and the Hip disability/Knee injury and Osteoarthritis Outcome Score–Physical function Short form (HOOS-PS/KOOS-PS). Assessments were performed preoperatively and at 3 and 12 months postoperatively.