The Influence of Movement-Evoked Pain on Lower Extremity Physical Function in Older Adults

Murillo, Bryce Cameron; Lipat, Ania L.; Peterson, Jeffrey J.; Cruz-Almeida, Yenisel

doi:10.1016/j.jpain.2022.03.179

Cited by 2 publications

(1 citation statement)

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“…Overall, the study and inclusion of MEP in clinical research and measurement should be prioritized, not only to expand the knowledge on the multispectral concept of pain, but also from a biomechanical and gait perspective, since recent studies advocate for the fact that MEP accounts for a significant amount of variance in gait performance in older adults and, as such, it should be considered in the development of future physical function pain assessments and treatments (Murillo et al., 2022). Furthermore, and considering both the fact that movement‐evoked pain is directly driven by movement, as well as the importance that exercise therapy is earning cross‐sectionally in different conditions, MEP emerges as an outcome measure of paramount importance to be tracked and assessed (Leemans et al., 2022).…”

Section: Discussionmentioning

confidence: 99%

Movement‐evoked pain is not associated with pain at rest or physical function in knee osteoarthritis

Lozano‐Meca,

Gacto‐Sánchez,

Montilla‐Herrador

2024

European Journal of Pain

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IntroductionKnee Osteoarthritis (KOA) is mainly characterized by pain. The assessment of KOA‐related pain frequently focuses on different constructs subject to sources of bias or drawbacks, as the classical Pain at Rest (PAR). Movement‐evoked pain (MEP), recently defined as ‘pain during walking’, emerges as a differential concept, since PAR and MEP are driven by different underlying mechanisms. Given the novelty of the MEP approach, its association with PAR or with different performance‐based tests has not been studied in KOA yet.Materials and MethodsA cross sectional study was conducted. PAR was measured, alongside the performance of four mobility tests and their corresponding MEP: Timed Up and Go Test, 10‐metre Walk Test, 2‐Minute Walk Test, and 6‐Minute Walk Test. Association and agreement were explored for MEP versus PAR, while the correlation of the tests versus each corresponding MEP‐measure was assessed.ResultsNeither association nor agreement were found in the duality MEP versus PAR. Also, the lack of association between the performance of a mobility test and the perceived level of pain during the development of the test was stated.ConclusionMovement‐evoked pain is neither related to pain at rest nor to functional performance in subjects affected by knee osteoarthritis. The results from our study suggest that MEP and pain at rest measure and refer to different constructs in knee osteoarthritis. The implementation of MEP as an outcome in exercise‐therapy could enhance the tracking of results, as well as the development of tailored interventions under different conditions.SignificanceThis research elucidates the relevance of MEP, recently defined as ‘pain during walking’, through the analysis of its association with PAR and with functional performance (measured through four mobility tests) in knee osteoarthritis. The results from our study highlight the absence of either association or agreement between MEP and PAR, fact that supports and endorses the idea that both concepts measure and refer to different constructs in knee osteoarthritis.

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Section: Discussionmentioning

confidence: 99%