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. 2019 Feb;48(2):136-143.
doi: 10.1007/s00132-018-3636-2.

Differences in 1‑year outcome after primary total hip and knee arthroplasty : A cohort study in older patients with osteoarthritis

Haohan Zhai  1 , Hongni Geng  1 , Bo Bai  2 , Yulong Wang  3
Affiliations

Differences in 1‑year outcome after primary total hip and knee arthroplasty : A cohort study in older patients with osteoarthritis

Haohan Zhai et al. Orthopade. 2019 Feb.

Abstract

Background: Patients who undergo primary total hip (THA) and knee (TKA) arthroplasty show better clinical outcomes, improved quality of life and increased participation in leisure activities; however, the differences between primary THA and TKA in older patients are unknown.

Objective: The aim of the study was to compare the Western Ontario and McMasters University osteoarthritis index (WOMAC) scores and changes in WOMAC scores, the Medical Outcomes study 12-item short-form version 2 (SF-12) mental and physical health scales, satisfaction and frequency of participation in leisure activities in older osteoarthritis patients with a mean age of 67.9 ± 10.6 years who underwent primary THA and TKA.

Material and methods: Data from 170 THA and 169 TKA patients were collected 1 week preoperatively through self-reporting of WOMAC scores and SF-12. These parameters, level of satisfaction and frequency of participation in leisure activities were collected 1 year postoperatively by self-reporting questionnaires.

Results: The THA group of patients showed better WOMAC scores (P < 0.05), changes in WOMAC scores (P < 0.05), physical component summary (PCS) of SF-12 (P < 0.01) and changes in PCS scores (P < 0.01) compared with the TKA group. In addition, the THA patients showed higher overall satisfaction (91.90% vs. 83.60%), pain relief satisfaction (87.20% vs. 77.40%) and functional improvement satisfaction (90.10% vs. 83.08%) in comparison with the TKA patients. Furthermore, a higher frequency of participation in leisure activities was achieved in THA patients, except for intellectual leisure activities.

Conclusion: These findings suggest that primary THA provides superior clinical outcomes, quality of life, satisfaction, and participation in leisure activities compared with primary TKA in older patients.

Keywords: Leisure activity; Osteoarthritis; Patient satisfaction; Quality of life; Questionnaire.

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