Determinants of Self-Report Outcome Measures in People With Knee Osteoarthritis

Maly, Monica R.; Costigan, Patrick A.; Olney, Sandra J.

doi:10.1016/j.apmr.2005.08.110

Cited by 213 publications

(213 citation statements)

References 34 publications

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“…Compared with people without knee OA, those with knee OA have lower knee extensor strength (force-generating capacity) (3)(4)(5)(6) and impaired standing balance (5)(6)(7)(8), commonly defined as greater postural body sway or center of pressure (COP) displacement, suggesting that both reduced knee extensor strength and standing balance are potential impairments to be evaluated in the research and clinical settings as they may influence functional limitations in knee OA. Although several observational studies have shown with reasonable consistency that knee extensor strength is an important determinant of physical function (4,9), evidence for the standing balance-physical function association is limited (4,5,7). In the first place, it is not a universal observation that patients with knee OA had greater standing COP displacements than did healthy controls (3,4,10).…”

Section: Introductionmentioning

confidence: 99%

Associations of knee extensor strength and standing balance with physical function in knee osteoarthritis

Pua

Liang

Ong

et al. 2011

Arthritis Care & Research

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Objective. Knee extensor strength is an important correlate of physical function in patients with knee osteoarthritis; however, it remains unclear whether standing balance is also a correlate. The purpose of this study was to evaluate the cross-sectional associations of knee extensor strength, standing balance, and their interaction with physical function. Methods. One hundred four older adults with end-stage knee osteoarthritis awaiting a total knee replacement (mean ؎ SD age 67 ؎ 8 years) participated. Isometric knee extensor strength was measured using an isokinetic dynamometer. Standing balance performance was measured by the center of pressure displacement during quiet standing on a balance board. Physical function was measured by the self-report Short Form 36 (SF-36) questionnaire and by the 10-meter fast-pace gait speed test. Results. After adjustment for demographic and knee pain variables, we detected significant knee strength by standing balance interaction terms for both SF-36 physical function and fast-pace gait speed. Interrogation of the interaction revealed that standing balance in the anteroposterior plane was positively related to physical function among patients with lower knee extensor strength. Conversely, among patients with higher knee extensor strength, the standing balancephysical function associations were, or tended to be, negative. Conclusion. These findings suggest that although standing balance was related to physical function in patients with knee osteoarthritis, this relationship was complex and dependent on knee extensor strength level. These results are of importance in developing intervention strategies and refining theoretical models, but they call for further study.

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Section: Introductionmentioning

confidence: 99%

Associations of knee extensor strength and standing balance with physical function in knee osteoarthritis

Pua

Liang

Ong

et al. 2011

Arthritis Care & Research

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“…14 Physical performance measures have often been criticized, as detailed testing of their measurement properties has not been extensively reported. 14,22,33 Measures of responsiveness have commonly been reported as statistically significant change scores, which are useful in establishing the threshold of change needed beyond measurement error. 10 Investigation of minimal clinically important differences (MCIDs) of physical performance measures is warranted, as these have become commonly used outcome measures in the treatment of OA.…”

mentioning

confidence: 99%

A Comparison of 3 Methodological Approaches to Defining Major Clinically Important Improvement of 4 Performance Measures in Patients With Hip Osteoarthritis

Wright¹,

Cook²,

Baxter³

et al. 2011

Journal of Orthopaedic & Sports Physical Therapy

322

246

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For rehabilitation professionals engaged in the treatment of osteoarthritis (OA), it is standard practice to perform objective assessments of physical function (using both physical performance and self-report measures) to obtain a picture of patient status. These assessments also serve as a baseline value for estimating changes (treatment effects) over time. While reliability and validity of some commonly used physical performance measures have been investigated in an OA population, most require further research regarding clinical utility and responsiveness. 14 Physical performance measures have often been criticized, as detailed testing of their measurement properties has not been extensively reported. 14,22,33 Measures of responsiveness have commonly been reported as statistically significant change scores, which are useful in establishing the threshold of change needed beyond measurement error. 10 Investigation of minimal clinically important differences (MCIDs) of physical performance measures is warranted, as these have become commonly used outcome measures in the treatment of OA. 8,12,17,[35][36][37] At present, the responsiveness (in terms of MCID) of the timed up-and-go (TUG) test, 40-meter self-paced walk test (40-m SPWT), 30-second chair stand (30 CST), and 20-cm step test has not been investigated in T T STUDY DESIGN: Prospective cohort study. T T OBJECTIVES:To establish the major clinically important improvement (MCII) of the timed upand-go test (TUG), 40-meter self-paced walk test (40-m SPWT), 30-second chair stand (30 CST), and a 20-cm step test in patients with hip osteoarthritis (OA) undergoing physiotherapy treatment. As a secondary aim, a comparison of methods was employed to evaluate the effect of method on the reported MCII. T T BACKGROUND: Minimal clinically importantdifference scores are commonly used by rehabilitation professionals to determine patient response following treatment. A gold standard for calculating MCII has yet to be determined, which has resulted in problems of interpretation due to varied results. T T METHODS:As part of a randomized controlled trial, 65 patients were randomized into a physiotherapy treatment group for hip OA, in which they completed 4 physical performance measures at baseline and 9 weeks. Upon completion of physiotherapy, patients assessed their response to treatment on a 15-point global rating of change scale (GRCS). MCII was estimated using 3 variations of an anchor-based method, based on the patient's opinion. T T RESULTS:A comparison of 3 methods resulted in the following change scores being best associated with our definition of MCII: a reduction equal to or greater than 0.8, 1.4, and 1.2 seconds for the TUG; an increase equal to or greater than 0.2, 0.3, and 0.2 m/s for the 40-m SPWT; an increase equal to or greater than 2.0, 2.6, and 2.1 repetitions for the 30 CST; an increase equal to or greater than 5.0, 12.8, and 16.4 steps for the 20-cm step test. T T CONCLUSION:The variation in methods provided very different results. This illustrates the impor...

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“…For example, the Western Ontario and McMaster Universities osteoarthritis index (WOMAC) and the multi-purpose health survey questionnaire (SF 36), in combination with several physical performance measurements (e.g. Six Minute Walk Test, Time Up & Go) are widely used prior and several months after surgery (Stratford et al 2003;Maly, Costigan, and Olney 2006;Dohnke, Knäuper, B., and Müller-Fahrnow 2005). These standardized clinical methods have a strong cross-sectional ability that provides useful information from a wide population in a particular time.…”

Section: Research Developments Of Thr Post-operatory Home Recovery Tementioning

confidence: 99%

An Integrated Patient-Centric Approach for Situated Research on Total Hip Replacement: ESTHER

et al. 2014

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Abstract.Homecare is believed to alleviate the care responsibilities that professionals and health institutions are facing due to increasing need for care that our current society demands. Relying on the emergence of technological innovations homecare could empower patients to undertake a more active role in the care practice. Understanding the value of technologies to support patients' awareness and reflection of their own progress is argued as an important step to design appropriate mechanisms that fit patients' needs. This chapter discusses an integrated patient-centric approach to design homecare technologies considering patients' personal experiences and social context as crucial aspects when providing care support. This approach proposes the development of in-situ methods and tools to provide a holistic view of patients care experience through the design of interventions in the context of use. The development of ESTHER (Experience Sampling for Total Hip Replacement) is presented to illustrate the benefits and challenges of conducting in-situ research by supporting the collection of physical activity and emotional states in order for patients to self-monitor and self-reflect on the progress of their recovery.The transition from open and simple interventions to more complex and specific ones opens the discussion of the role of technology to introduce new practices that uncover richer experiences by influencing patient's care activities via self-reporting and self-reflecting mechanisms. The gradual introduction of technologies to uncover from general to more specific experiences it does not only address research needs, more important it brings an understanding on the acceptance of technologies in patients' care practices. The consequence is a new generation of research to application tools that bring a closer understanding of patients' experiences and context to inform the design of supportive homecare technologies that embrace a more active role of patients.

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Determinants of Self-Report Outcome Measures in People With Knee Osteoarthritis

Cited by 213 publications

References 34 publications

Associations of knee extensor strength and standing balance with physical function in knee osteoarthritis

Associations of knee extensor strength and standing balance with physical function in knee osteoarthritis

A Comparison of 3 Methodological Approaches to Defining Major Clinically Important Improvement of 4 Performance Measures in Patients With Hip Osteoarthritis

An Integrated Patient-Centric Approach for Situated Research on Total Hip Replacement: ESTHER

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