Does free-living physical activity improve one-year following total knee arthroplasty in patients with osteoarthritis : a prospective study

Bin sheeha, B; Granat, MH; Williams, AE; Sands Johnson, D; Jones, R

Abstract

Objective Total knee arthroplasty (TKA) is the gold-standard treatment for end-stage knee osteoarthritis, and the primary expectations are reduced pain and improved function. However, there is conflicting evidence regarding functional changes post-TKA. Commonly, functional changes are measured using Oxford Knee Score (OKS). No previous study has investigated physical behaviour (PB) changes in terms of volume and patterns post-TKA. The aims of this study were to explore volume and pattern changes in PB following TKA using an objective tool and to assess the correlation between this and OKS.
Design An activPAL measured the PB of individuals on a waiting list for TKA for a period of 7–8 days pre-TKA, and for the same length of time at 12 months post-TKA. OKS was completed at similar follow-up time points.
Results Thirty-three individuals completed the study, where stepping time, the number of steps and the time spent on moderate to vigorous physical activity (MVPA) (>100 steps/minute) improved significantly post-TKA p = 0.0001. Steps at 12 months post-TKA improved by 45.6% (from 4,240 to 6,174) and stepping time increased by 38.8% (from 0.98 to 1.36 hours). MVPA improved by 35 minutes at 12 months (from 6.6 to 41.7 minutes).
There were no significant correlations between PB and OKS.
Conclusion This is the first study to explore PB volumes and event-based patterns post-TKA. Activity improved in terms of volume and patterns. No correlation was found between OKS and ActivPAL, which emphasises the need to use objective methods in addition to patient reported outcome measures.

Citation

Bin sheeha, B., Granat, M., Williams, A., Sands Johnson, D., & Jones, R. (2020). Does free-living physical activity improve one-year following total knee arthroplasty in patients with osteoarthritis : a prospective study. Osteoarthritis and Cartilage Open, 2(3), 100065. https://doi.org/10.1016/j.ocarto.2020.100065

• Journal Article Type: Article
• Acceptance Date: Apr 7, 2020
• Online Publication Date: Apr 13, 2020
• Publication Date: Sep 1, 2020
• Deposit Date: Apr 20, 2020
• Publicly Available Date: Jun 1, 2020
• Journal: Osteoarthritis and Cartilage Open
• Publisher: Elsevier
• Volume: 2
• Issue: 3
• Pages: 100065
• DOI: https://doi.org/10.1016/j.ocarto.2020.100065
• Publisher URL: https://doi.org/10.1016/j.ocarto.2020.100065
• Related Public URLs: https://www-sciencedirect-com.salford.idm.oclc.org/journal/osteoarthritis-and-cartilage-open