The aim of this study was to assess the effect of multimorbidity
on improvements in health-related quality of life (HRQoL) following
total hip arthroplasty (THA) and total knee arthroplasty (TKA). Using data from a regional joint registry for 14 573 patients,
HRQoL was measured prior and one year following surgery using the
Oxford Hip Score (OHS) and Oxford Knee Score (OKS), and the 12-Item
Short-Form Health Survey Physical and Mental Component Summary scores
(PCS and MCS, respectively). Multimorbidity was defined as the concurrence
of two or more self-reported chronic conditions. A linear mixed-effects
model was used to test the effects of multimorbidity and the number
of chronic conditions on improvements in HRQoL.Aims
Patients and Methods