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Georgopoulos V, Smith S, McWilliams DF, Steultjens MPM, Williams A, Price A, Valdes AM, Vincent TL, Watt FE, Walsh DA. Harmonising knee pain patient-reported outcomes: a systematic literature review and meta-analysis of Patient Acceptable Symptom State (PASS) and individual participant data (IPD). Osteoarthritis Cartilage 2023; 31:83-95. [PMID: 36089231 DOI: 10.1016/j.joca.2022.08.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 08/10/2022] [Accepted: 08/16/2022] [Indexed: 02/02/2023]
Abstract
OBJECTIVE In order to facilitate data pooling between studies, we explored harmonisation of patient-reported outcome measures (PROMs) in people with knee pain due to osteoarthritis or knee trauma, using the Patient Acceptable Symptom State scores (PASS) as a criterion. METHODS We undertook a systematic literature review (SLR) of PASS scores, and performed individual participant data (IPD) analysis of score distributions from concurrently completed PROM pairs. Numerical rating scales (NRS), visual analogue scales, KOOS and WOMAC pain questionnaires were standardised to 0 to 100 (worst) scales. Meta-regression explored associations of PASS. Bland Altman plots compared PROM scores within individuals using IPD from WebEx, KICK, MenTOR and NEKO studies. RESULTS SLR identified 18 studies reporting PASS in people with knee pain. Pooled standardised PASS was 27 (95% CI: 21 to 35; n = 6,339). PASS was statistically similar for each standardised PROM. Lower PASS was associated with lower baseline pain (β = 0.49, P = 0.01) and longer time from treatment initiation (Q = 6.35, P = 0.04). PASS scores were lowest in ligament rupture (12, 95% CI: 11 to 13), but similar between knee osteoarthritis (31, 95% CI: 26 to 36) and meniscal tear (27, 95% CI: 20 to 35). In IPD, standardised PROMs each revealed similar group mean scores, but scores within individuals diverged between PROMs (LoA between -7 to -38 and +25 to 52). CONCLUSION Different standardised PROMs give similar PASS thresholds in group data. PASS thresholds may be affected more by patient and treatment characteristics than between PROMs. However, different PROMs give divergent scores within individuals, possibly reflecting different experiences of pain.
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Affiliation(s)
- V Georgopoulos
- Academic Rheumatology, Pain Centre Versus Arthritis and NIHR Nottingham BRC, School of Medicine, University of Nottingham, UK.
| | - S Smith
- Academic Rheumatology, Pain Centre Versus Arthritis and NIHR Nottingham BRC, School of Medicine, University of Nottingham, UK.
| | - D F McWilliams
- Academic Rheumatology, Pain Centre Versus Arthritis and NIHR Nottingham BRC, School of Medicine, University of Nottingham, UK.
| | - M P M Steultjens
- Centre for Living, School of Health and Life Sciences, Glasgow Caledonian University, UK.
| | - A Williams
- Centre for Osteoarthritis Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, University of Oxford, UK; Fortius Clinic, London, UK.
| | - A Price
- Department of Immunology and Inflammation, Imperial College London, UK; Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, UK.
| | - A M Valdes
- Academic Rheumatology, Pain Centre Versus Arthritis and NIHR Nottingham BRC, School of Medicine, University of Nottingham, UK.
| | - T L Vincent
- Centre for Osteoarthritis Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, University of Oxford, UK; Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, UK.
| | - F E Watt
- Centre for Living, School of Health and Life Sciences, Glasgow Caledonian University, UK; Centre for Osteoarthritis Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, University of Oxford, UK; Centre for Sport, Exercise and Osteoarthritis Research Versus Arthritis, UK.
| | - D A Walsh
- Academic Rheumatology, Pain Centre Versus Arthritis and NIHR Nottingham BRC, School of Medicine, University of Nottingham, UK.
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Knoop J, van der Leeden M, van der Esch M, de Rooij M, Peter WF, Bennell KL, Steultjens MPM, Hakkinen A, Roorda LD, Lems WF, Dekker J. Is a model of stratified exercise therapy by physical therapists in primary care feasible in patients with knee osteoarthritis? : a mixed methods study. Physiotherapy 2019; 106:101-110. [PMID: 30981515 DOI: 10.1016/j.physio.2019.01.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 12/01/2019] [Indexed: 10/27/2022]
Abstract
OBJECTIVES To explore the feasibility of a newly developed model of stratified exercise therapy in primary care for patients with knee osteoarthritis (OA). DESIGN Mixed method design (process, outcome and qualitative evaluation). SETTING Six physical therapy practices in primary care around Amsterdam. PARTICIPANTS Fifty eligible patients with knee OA, visiting one of the participating physical therapists (PTs). INTERVENTION Patients were allocated to a subgroup based on a simple stratification tool and received subgroup-specific, protocolized, 4-month, exercise therapy. MAIN OUTCOME MEASURES Feasibility of this model of stratified exercise therapy was explored by multiple process parameters, outcome measures (physical functioning and knee pain; at baseline and 4-months follow-up) and experiences from patients and PTs. RESULTS From 97 potentially eligible patients, fifty patients were included and allocated to the 'high muscle strength subgroup' (n=17), 'depression subgroup' (n=4), 'obesity subgroup' (n=6) or 'low muscle strength subgroup' (n=23). Three patients dropped out during the study period. PTs provided relatively low numbers of sessions (on average 10 sessions), although exceedance of the recommended maximum number of sessions did occur frequently. We found clinically relevant improvements on physical functioning and knee pain (P<0.001 for both) for the total group. In general, the model of stratified exercise therapy was considered to be easily applicable and of added value for daily practice. CONCLUSIONS Our model of stratified exercise therapy seems to be feasible in primary care, although a number of limitations were reported. Future research should determine the (cost-)effectiveness of an adapted model, compared to usual, non-stratified exercise therapy.
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Affiliation(s)
- J Knoop
- Reade, Amsterdam Rehabilitation Research Institute, Amsterdam, Netherlands; Vrije Universiteit Amsterdam, Department of Health Sciences, Amsterdam, Netherlands.
| | - M van der Leeden
- Reade, Amsterdam Rehabilitation Research Institute, Amsterdam, Netherlands; VUmc, Department of Rehabilitation Medicine, Amsterdam, Netherlands.
| | - M van der Esch
- Reade, Amsterdam Rehabilitation Research Institute, Amsterdam, Netherlands.
| | - M de Rooij
- Reade, Amsterdam Rehabilitation Research Institute, Amsterdam, Netherlands.
| | - W F Peter
- Reade, Amsterdam Rehabilitation Research Institute, Amsterdam, Netherlands.
| | - K L Bennell
- University of Melbourne, School of Health Sciences, Melbourne, Australia.
| | - M P M Steultjens
- Glasgow Caledonian University, School of Health and Life Sciences, Glasgow, UK.
| | - A Hakkinen
- University of Jyväskylä, Faculty of Sports and Health Sciences, Jyväskylä, Finland.
| | - L D Roorda
- Reade, Amsterdam Rehabilitation Research Institute, Amsterdam, Netherlands.
| | - W F Lems
- Reade, Jan van Breemen Research Institute, Amsterdam, Netherlands; VUmc, Department of Rheumatology, Amsterdam, Netherlands.
| | - J Dekker
- VUmc, Department of Rehabilitation Medicine, Amsterdam, Netherlands.
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Knoop J, Steultjens MPM, Roorda LD, Lems WF, van der Esch M, Thorstensson CA, Twisk JWR, Bierma-Zeinstra SMA, van der Leeden M, Dekker J. Improvement in upper leg muscle strength underlies beneficial effects of exercise therapy in knee osteoarthritis: secondary analysis from a randomised controlled trial. Physiotherapy 2014; 101:171-7. [PMID: 25280604 DOI: 10.1016/j.physio.2014.06.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Accepted: 06/23/2014] [Indexed: 01/16/2023]
Abstract
OBJECTIVES Although exercise therapy is effective for reducing pain and activity limitations in patients with knee osteoarthritis (OA), the underlying mechanisms are unclear. This study aimed to evaluate if improvements in neuromuscular factors (i.e. upper leg muscle strength and knee proprioception) underlie the beneficial effects of exercise therapy in patients with knee OA. DESIGN Secondary analyses from a randomised controlled trial, with measurements at baseline, 6 weeks, 12 weeks and 38 weeks. SETTING Rehabilitation centre. PARTICIPANTS One hundred and fifty-nine patients diagnosed with knee OA. INTERVENTION Exercise therapy. MAIN OUTCOME MEASURES Changes in pain [numeric rating scale (NRS)] and activity limitations [Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) physical function subscale and get-up-and-go test] during the study period. Independent variables were changes in upper leg muscle strength and knee joint proprioception (i.e. motion sense) during the study period. Longitudinal regression analyses (generalised estimating equation) were performed to analyse associations between changes in upper leg muscle strength and knee proprioception with changes in pain and activity limitations. RESULTS Improved muscle strength was significantly associated with reductions in NRS pain {B coefficient -2.5 [95% confidence interval (CI) -3.7 to -1.4], meaning that every change of 1 unit of strength was linked to a change of -2.5 units of pain}, WOMAC physical function (-8.8, 95% CI -13.4 to -4.2) and get-up-and-go test (-1.7, 95% CI -2.4 to -1.0). Improved proprioception was not significantly associated with better outcomes of exercise therapy (P>0.05). CONCLUSIONS Upper leg muscle strengthening is one of the mechanisms underlying the beneficial effects of exercise therapy in patients with knee OA.
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Affiliation(s)
- J Knoop
- Amsterdam Rehabilitation Research Centre, Reade, The Netherlands.
| | - M P M Steultjens
- School of Health and Life Sciences, Institute for Applied Health Research, Glasgow Caledonian University, UK
| | - L D Roorda
- Amsterdam Rehabilitation Research Centre, Reade, The Netherlands
| | - W F Lems
- Jan van Breemen Research Institute, Reade, The Netherlands; Department of Rheumatology, VU University Medical Centre, The Netherlands
| | - M van der Esch
- Amsterdam Rehabilitation Research Centre, Reade, The Netherlands
| | - C A Thorstensson
- Department of Clinical Neuroscience and Physiology, University of Gothenburg, Sweden
| | - J W R Twisk
- Department of Clinical Epidemiology and Biostatistics, EMGO Institute, VU University Medical Centre, The Netherlands
| | - S M A Bierma-Zeinstra
- Department of General Practice, Department of Orthopaedics, University Medical Centre Rotterdam, Erasmus MC, The Netherlands
| | - M van der Leeden
- Amsterdam Rehabilitation Research Centre, Reade, The Netherlands; Department of Rehabilitation Medicine, EMGO Institute, VU University Medical Centre, The Netherlands
| | - J Dekker
- Department of Rehabilitation Medicine, EMGO Institute, VU University Medical Centre, The Netherlands; Department of Psychiatry, VU University Medical Centre, The Netherlands
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Knoop J, Dekker J, van der Leeden M, van der Esch M, Klein JP, Hunter DJ, Roorda LD, Steultjens MPM, Lems WF. Is the severity of knee osteoarthritis on magnetic resonance imaging associated with outcome of exercise therapy? Arthritis Care Res (Hoboken) 2014; 66:63-8. [PMID: 23982988 DOI: 10.1002/acr.22128] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Accepted: 08/13/2013] [Indexed: 01/27/2023]
Abstract
OBJECTIVE To evaluate associations between severity of knee osteoarthritis (OA) on magnetic resonance imaging (MRI) and treatment outcomes in knee OA patients treated with exercise therapy in an exploratory study. METHODS Ninety-five participants with knee OA in a 12-week exercise program had obtained 3.0T MRI scans of the knee joint prior to treatment. MRI data were systematically assessed for OA severity of multiple features (cartilage integrity, bone marrow lesions, osteophyte formation, effusion/synovitis, and meniscal abnormalities) according to the Boston Leeds Osteoarthritis Knee Score method. Regression analyses were performed to analyze associations between OA severity on MRI (for the tibiofemoral and patellofemoral [PF] compartments) and outcome of exercise therapy, i.e., changes in activity limitations (Western Ontario and McMaster Universities Osteoarthritis Index physical function; primary outcome), pain and upper leg muscle strength, and treatment response (Outcome Measures in Rheumatology/Osteoarthritis Research Society International criteria). RESULTS Improvements of 24%, 34%, and 21% on average in activity limitations, pain, and muscle strength, respectively, after 12-week exercise therapy were found (P < 0.001). Severity of abnormalities in PF cartilage integrity was significantly associated with fewer improvements in both activity limitations (P = 0.01) and muscle strength (P = 0.04). Severity of PF osteophyte formation was significantly associated with fewer improvements in muscle strength (P < 0.01). All other features on MRI were not associated with treatment outcome. CONCLUSION Effectiveness of exercise therapy seems to be independent of OA severity on MRI, except for abnormalities in cartilage integrity and osteophyte formation, both in the PF compartment. Our study suggests that all grades of OA severity on MRI can benefit from professionally supervised exercise therapy, although the effects might be reduced in patients with advanced PF OA.
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Affiliation(s)
- J Knoop
- Amsterdam Rehabilitation Research Center
- Reade, Amsterdam, The Netherlands
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Knoop J, Dekker J, van der Leeden M, van der Esch M, Thorstensson CA, Gerritsen M, Voorneman RE, Peter WF, de Rooij M, Romviel S, Lems WF, Roorda LD, Steultjens MPM. Knee joint stabilization therapy in patients with osteoarthritis of the knee: a randomized, controlled trial. Osteoarthritis Cartilage 2013; 21:1025-34. [PMID: 23721797 DOI: 10.1016/j.joca.2013.05.012] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Revised: 05/17/2013] [Accepted: 05/20/2013] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To investigate whether an exercise program, initially focusing on knee stabilization and subsequently on muscle strength and performance of daily activities is more effective than an exercise program focusing on muscle strength and performance of daily activities only, in reducing activity limitations in patients with knee osteoarthritis (OA) and instability of the knee joint. DESIGN A single-blind, randomized, controlled trial involving 159 knee OA patients with self-reported and/or biomechanically assessed knee instability, randomly assigned to two treatment groups. Both groups received a supervised exercise program for 12 weeks, consisting of muscle strengthening exercises and training of daily activities, but only in the experimental group specific knee joint stabilization training was provided. Outcome measures included activity limitations (Western Ontario and McMaster Universities Osteoarthritis Index - WOMAC physical function, primary outcome), pain, global perceived effect and knee stability. RESULTS Both treatment groups demonstrated large (∼20-40%) and clinically relevant reductions in activity limitations, pain and knee instability, which were sustained 6 months post-treatment. No differences in effectiveness between experimental and control treatment were found on WOMAC physical function (B (95% confidence interval - CI) = -0.01 (-2.58 to 2.57)) or secondary outcome measures, except for a higher global perceived effect in the experimental group (P = 0.04). CONCLUSIONS Both exercise programs were highly effective in reducing activity limitations and pain and restoring knee stability in knee OA patients with instability of the knee. In knee OA patients suffering from knee instability, specific knee joint stabilization training, in addition to muscle strengthening and functional exercises, does not seem to have any additional value. Dutch Trial Register (NTR) registration number: NTR1475.
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Affiliation(s)
- J Knoop
- Amsterdam Rehabilitation Research Center, Reade, The Netherlands.
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Knoop J, Steultjens MPM, van der Leeden M, van der Esch M, Thorstensson CA, Roorda LD, Lems WF, Dekker J. Proprioception in knee osteoarthritis: a narrative review. Osteoarthritis Cartilage 2011; 19:381-8. [PMID: 21251988 DOI: 10.1016/j.joca.2011.01.003] [Citation(s) in RCA: 141] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2010] [Revised: 12/16/2010] [Accepted: 01/03/2011] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To give an overview of the literature on knee proprioception in knee osteoarthritis (OA) patients. METHOD A literature search was performed and reviewed using the narrative approach. RESULTS (1) Three presumed functions of knee proprioception have been described in the literature: protection against excessive movements, stabilization during static postures, and coordination of movements. (2) Proprioceptive accuracy can be measured in different ways; correlations between these methods are low. (3) Proprioceptive accuracy in knee OA patients seems to be impaired when compared to age-matched healthy controls. Unilateral knee OA patients may have impaired proprioceptive accuracy in both knees. (4) Causes of impaired proprioceptive accuracy in knee OA remain unknown. (5) There is currently no evidence for a role of impaired proprioceptive accuracy in the onset or progression of radiographic osteoarthritis (ROA). (6) Impaired proprioceptive accuracy could be a risk factor for progression (but not for onset) of both knee pain and activity limitations in knee OA patients. (7) Exercise therapy seems to be effective in improving proprioceptive accuracy in knee OA patients. CONCLUSIONS Recent literature has shown that proprioceptive accuracy may play an important role in knee OA. However, this role needs to be further clarified. A new measurement protocol for knee proprioception needs to be developed. Systematic reviews focusing on the relationship between impaired proprioceptive accuracy, knee pain and activity limitations and on the effect of interventions (in particular exercise therapy) on proprioceptive accuracy in knee OA are required. Future studies focusing on causes of impaired proprioceptive accuracy in knee OA patients are also needed, taking into account that also the non-symptomatic knee may have proprioceptive impairments. Such future studies may also provide knowledge of mechanism underlying the impact of impaired proprioceptive accuracy on knee pain and activity limitations.
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Affiliation(s)
- J Knoop
- Reade, Centre of Rehabilitation and Rheumatology (formerly Jan van Breemen Instituut), Department of Rehabilitation Research, Amsterdam, the Netherlands.
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Ball SV, Maxwell JL, Cruikshank MK, Douglas S, Price V, Davidson JE, Hanna L, Brown L, Watson L, Kelly J, Baildam EM, Cleary AG, McCann LM, Beresford MW, Hawley DP, Baildam EM, Amin TS, Cruikshank MK, Davidson J, Dixon J, Ennals G, Gulati R, Ohlsson V, Rangaraj S, Riley P, Sundaramoorthy C, Walsh J, Foster HE, Hendry GJ, Gardner-Medwin J, Turner DE, Woodburn J, Lorgelly PK, Hendry GJ, Steultjens MPM, Gardner-Medwin J, Woodburn J, Turner DE, Jandial S, Stewart J, Kay L, Foster HE, Leone V, McDonagh J, Pilkington C, Rangaraj S, Tizard EJ, Beresford MW, McErlane F, Kulkani P, Nicholl K, Foster HE, McErlane F, Foster HE, Symmons D, Hyrich K, Midgley A, Beresford MW, Pain CE, McCann LJ, Cleary AG, Beresford MW, Barnes N, Landes C, Baildam EM, Pain CE, Gargh K, McCann LJ, Rapley T, Heaven B, May C, Kay L, Foster H, Rapley T, Avery P, May C, Beresford M, Foster H, Rapley TR, May C, Foster HE, Sen ES, Mandal K, Hinchcliffe A, Dick AD, Ramanan AV, Thorbinson C, Midgley A, Beresford MW, Watson L, Midgley A, Hanna L, Jones C, Holt R, Pilkington C, Tullus K, Beresford MW, Wyllie R, Craig L. BSPAR ANNUAL CONFERENCE ABSTRACTS (presented in alphabetical order of first author). Rheumatology (Oxford) 2011. [DOI: 10.1093/rheumatology/keq394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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van Weely SFE, van Denderen CJ, van der Horst-Bruinsma IE, Nurmohamed MT, Dijkmans BAC, Dekker J, Steultjens MPM. Reproducibility of performance measures of physical function based on the BASFI, in ankylosing spondylitis. Rheumatology (Oxford) 2009; 48:1254-60. [DOI: 10.1093/rheumatology/kep190] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Wiertsema SH, van Hooff HJA, Migchelsen LAA, Steultjens MPM. Reliability of the KT1000 arthrometer and the Lachman test in patients with an ACL rupture. Knee 2008; 15:107-10. [PMID: 18261913 DOI: 10.1016/j.knee.2008.01.003] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2007] [Revised: 01/06/2008] [Accepted: 01/07/2008] [Indexed: 02/02/2023]
Abstract
The underlying study is a cross sectional study on the reliability of the KT1000 arthrometer and the Lachman test to determine the within-session inter-rater reliability and intra-rater reliability of the KT1000 arthrometer and the Lachman test. Twenty patients with a complete tear of the anterior cruciate ligament (ACL) were examined in a single session each. During the assessment, two physical therapists measured the anterior-posterior translation of the knee using both the KT1000 arthrometer and the Lachman test. One examiner performed a repeated measurement of each test for determination of intra-rater reliability. The examiners were blinded to the findings of their colleague. The intraclass correlation coefficient (ICC) was used to describe the degree of reliability of the measurements. High ICCs were found for the intra-rater reliability and the inter-rater reliability of the Lachman test (ICC=1.0 and 0.77). For the KT1000 arthrometer both ICCs were clearly lower (ICC=0.47 and 0.14). The KT1000 arthrometer shows inadequate reliabilities, even when measurements are repeated within a single measurement session. Contrastingly, the Lachman test is a reliable measurement to determine the anterior-posterior laxity of the ACL deficit knee. The results of the present study suggest good within-session intra-rater reliability as well as inter-rater reliability for the Lachman test.
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Affiliation(s)
- S H Wiertsema
- Department of Rehabilitation Medicine, Section Physical Therapy, VU University Medical Center, Amsterdam, The Netherlands.
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Hurkmans EJ, van der Esch M, Ostelo RWJG, Knol D, Dekker J, Steultjens MPM. Reproducibility of the measurement of knee joint proprioception in patients with osteoarthritis of the knee. ACTA ACUST UNITED AC 2007; 57:1398-403. [DOI: 10.1002/art.23082] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Terwee CB, Mokkink LB, Steultjens MPM, Dekker J. Performance-based methods for measuring the physical function of patients with osteoarthritis of the hip or knee: a systematic review of measurement properties. Rheumatology (Oxford) 2006; 45:890-902. [PMID: 16461441 DOI: 10.1093/rheumatology/kei267] [Citation(s) in RCA: 102] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVE To systematically review the measurement properties (i.e. internal consistency, reproducibility, validity, responsiveness and interpretability) of all performance-based methods which have been used to measure the physical function of patients with osteoarthritis of the hip or knee. METHODS A systematic search was conducted in Medline, CINAHL, PsychINFO and Embase. Standardized criteria were applied to assess the quality of the clinimetric studies and the measurement properties. RESULTS Twenty-six performance-based methods were included: 13 walking tests, two stair-climb tests, one chair test and ten multi-item tests. Three out of seven multi-activity tests were tested for internal consistency and two were rated positively. Fourteen tests were tested for reliability and five were rated positively. The absolute measurement error (agreement) was assessed for 10 tests. Only one test received a positive rating. Fourteen tests were tested for construct validity. Only two tests received positive ratings. Responsiveness was assessed for 12 tests, but none of them received a positive rating. A lot of indeterminate ratings were given, mostly for small studies or non-optimal analyses. CONCLUSION Many more well-designed studies are needed to assess the measurement properties of performance-based methods. More importantly, however, before one can make a justified choice of a particular performance-based method, consensus is needed on what activities should be included in a performance-based test for patients with hip or knee osteoarthritis and which aspects of function should be measured.
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Affiliation(s)
- C B Terwee
- EMGO Institute, VU University Medical Center, Van der Boechorststraat 7, 1081 BT Amsterdam, The Netherlands.
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Westert GP, Groenewegen PP, Boshuizen HC, Spreeuwenberg PMM, Steultjens MPM. Medical practice variations in hospital care; time trends of a spatial phenomenon. Health Place 2004; 10:215-20. [PMID: 15177196 DOI: 10.1016/j.healthplace.2003.07.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2002] [Revised: 01/03/2003] [Accepted: 07/09/2003] [Indexed: 11/17/2022]
Abstract
A persistent finding in health services research is that health care delivery and hospital utilisation in the Western world varies widely between areas, both within and between countries. Most studies have concentrated on cross-sectional variations in medical practice. The aim of this article is to investigate whether or not small area variation changed through time. We used hospital discharge rates in the Netherlands for 12 diagnostic or surgical categories to indicate medical practice patterns. The data cover a time span of almost two decades: 1980-1997. First, it was found that in most cases regions are consistently above or below the national trend in the study period. Second, the analysis revealed a statistically significant decline of regional variation in hospital discharges in general during the 1980s and the 1990s. In all but one medical category the results of the separate analyses point towards a downward trend. In one-third of the medical categories this downward trend was statistically significant. Potential parallel changes in regional disparities in need for care, e.g. morbidity or age composition of regional populations or changes in regional differences in care supply are discussed.
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Affiliation(s)
- G P Westert
- National Institute for Public Health and the Environment (RIVM), P.O. Box 1, Bilthoven 3720 BA, Netherlands.
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14
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Steultjens MPM, Dekker J, Bijlsma JWJ. Avoidance of activity and disability in patients with osteoarthritis of the knee: the mediating role of muscle strength. Arthritis Rheum 2002; 46:1784-8. [PMID: 12124862 DOI: 10.1002/art.10383] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
OBJECTIVE Avoidance of activity is hypothesized to lead to muscle weakness and consequently, to physical disability. This study was undertaken to validate the avoidance model by providing evidence for the mediating role of muscle weakness in the relationship between avoidance of activity and physical disability in patients with osteoarthritis (OA) of the knee. METHODS Data on avoidance of activity, observed physical disability, and muscle strength of the knee in 107 patients with knee OA were analyzed. A series of regression analyses was performed to establish the mediating role of muscle weakness. First, the effect of avoidance of activity on the level of disability was assessed. Next, the relationship between avoidance of activity and muscle strength was established. Finally, the mediating role of muscle strength could be established if the effect of avoidance of activity on disability decreased when muscle strength was taken into account. RESULTS Initially, avoidance of activity accounted for 21.5% of variance in disability. Avoidance of activity also accounted for 3.9% of variance in muscle strength. After muscle strength was taken into account, the variance in disability accounted for by avoidance of activity was reduced from 21.5% to 15.7%. Thus, the criteria for establishing the mediating role of muscle strength were met. CONCLUSION The results of this study provide evidence for the mediating role of muscle weakness in the relationship between avoidance of activity and disability in patients with knee OA.
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Affiliation(s)
- M P M Steultjens
- Netherlands Institute of Health Services Research, Utrecht, The Netherlands.
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