The relation of walking forces to structural damage in the knee: The Multicenter Osteoarthritis Study
- PMID: 40222627
- PMCID: PMC12148067
- DOI: 10.1016/j.joca.2025.04.007
The relation of walking forces to structural damage in the knee: The Multicenter Osteoarthritis Study
Abstract
Objective: Mechanical loading is an important, modifiable risk factor for knee osteoarthritis. Identifying walking loads associated with disease worsening presents intervention opportunities. Our purpose was to evaluate the longitudinal relation of the baseline vertical ground reaction force (GRF) during walking to worsening bone marrow lesions (BMLs) and cartilage damage using cohort data from the Multicenter Osteoarthritis Study (MOST).
Methods: MOST participants with GRF data at baseline and magnetic resonance imaging examinations at baseline and 2-year follow-up were included. Peak impact force (PIF) and average loading rate (ALR) from the vertical GRF were analyzed with respect to four joint regions (i.e., the medial and lateral portions of the tibiofemoral and patellofemoral joints). Analyses used logistic regression with generalized estimating equations and adjusted for relevant covariates.
Results: Higher PIF was associated with increased odds of worsening BMLs in the lateral patellofemoral joint (odds ratio (95% confidence interval [CI]): 1.33 (1.11, 1.60)) and worsening cartilage damage in the lateral patellofemoral joint (1.48 (1.24, 1.77)), lateral tibiofemoral joint (1.24 (1.03, 1.50)), and medial tibiofemoral joint (1.25 (1.06, 1.48)). Higher ALR was associated with reduced odds of BML worsening in the lateral tibiofemoral joint (0.60 (0.41,0.87)).
Conclusions: Higher peak forces when walking were associated with worsening BMLs in the lateral patellofemoral joint and with worsening cartilage damage in regions of the knee associated with higher contact forces during walking. Higher ALRs were not associated with increased odds of structural worsening (BMLs or cartilage).
Keywords: Bone marrow lesions; Cartilage; Ground reaction force; Impact; Loading rate; MRI.
Copyright © 2025 Osteoarthritis Research Society International. Published by Elsevier Ltd. All rights reserved.
Conflict of interest statement
Competing interests FWR is a shareholder and CMO of Boston Imaging Core Lab (BICL), LLC, a company providing radiologic image assessment services to academia and the pharmaceutical industry. He is a consultant to Grünenthal GmbH and is Editor in Chief of Osteoarthritis Imaging. NAS is a consultant for Pacira Biosciences and Trice Medical. AG is a shareholder of BICL, LLC and a consultant to Pfizer, Novartis, TissueGene, Medipost, Coval, ICM and Formation Bio. LKS, ST, MPL, and CLL declare no competing interests.
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