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Relationship of Patellofemoral Osteoarthritis to Changes in Performance-based Physical Function Over 7 Years: The Multicenter Osteoarthritis Study
Journal article   Peer reviewed

Relationship of Patellofemoral Osteoarthritis to Changes in Performance-based Physical Function Over 7 Years: The Multicenter Osteoarthritis Study

Harvi F Hart, Tuhina Neogi, Michael LaValley, Daniel White, Yuqing Zhang, Michael C Nevitt, James Torner, Cora E Lewis and Joshua J Stefanik
Journal of rheumatology, Vol.49(1), pp.98-103
01/2022
DOI: 10.3899/jrheum.210270
PMCID: PMC8724393
PMID: 34470797
url
https://www.ncbi.nlm.nih.gov/pmc/articles/8724393View
Open Access

Abstract

To determine the relationship of patellofemoral osteoarthritis (PFOA) to changes in performance-based function over 7 years. There were 2666 participants (62.2 ± 8.0 yrs, BMI 30.6 ± 5.9 kg/m , 60% female) from the Multicenter Osteoarthritis Study with knee radiographs at baseline who completed repeated chair stands and a 20-meter walk test (20MWT) at baseline, 2.5, 5, and 7 years. Generalized linear models assessed the relation of radiographic PFOA and radiographic PFOA with frequent knee pain to longitudinal changes in performance-based function. Analyses were adjusted for age, sex, BMI, tibiofemoral OA, and injury/surgery. Linear models demonstrated a significant group-by-time interaction for the repeated chair stands ( = 0.04) and the 20MWT ( < 0.0001). Those with radiographic PFOA took 1.01 seconds longer on the repeated chair stands ( = 0.02) and 1.69 seconds longer on the 20MWT ( < 0.0001) at 7 years compared with baseline. When examining the relation of radiographic PFOA with frequent knee pain to performance-based function, there was a significant group-by-time interaction for repeated chair stands ( = 0.05) and the 20MWT ( < 0.0001). Those with radiographic PFOA with frequent knee pain increased their time on the repeated chair stands by 1.12 seconds ( = 0.04) and on the 20MWT by 1.91 seconds ( < 0.0001) over 7 years. Individuals with radiographic PFOA and those with radiographic PFOA with frequent knee pain have worsening of performance-based function over time. This knowledge may present opportunities to plan for early treatment strategies for PFOA to limit functional decline over time.
Female Humans Knee Joint - diagnostic imaging Male Osteoarthritis, Knee - diagnostic imaging Pain Pain Measurement Patellofemoral Joint - diagnostic imaging

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