Rheumatology Advance Access originally published online on November 15, 2007
Rheumatology 2007 46(12):1835-1841; doi:10.1093/rheumatology/kem290
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Inter-examiner reproducibility of tests and criteria for generalized joint hypermobility and benign joint hypermobility syndrome
1Department of Medical Orthopaedics and Rehabilitation, Rigshospitalet, University Hospital, Copenhagen, 2Department of Rheumatology, Frederiksberg Hospital and 3Department of Rheumatology, Hospital of Nordsjælland, Hørsholm, Denmark.
Correspondence to: B. Juul-Kristensen, Department of Medical Orthopaedics and Rehabilitation, Rigshospitalet, University Hospital of Copenhagen, Blegdamsvej 9, Dk-2100 Copenhagen Ø, Denmark. E-mail: birgit.juul.kristensen{at}rh.regionh.dk; bjkprivat{at}mail.dk
| Abstract |
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Objective. To test the reproducibility of tests and criteria for generalized joint hypermobility (GJH) and benign joint hypermobility syndrome (BJHS).
Methods. A standardized protocol for clinical reproducibility studies was followed using a three-phase study (with a training, an overall agreement and a test phase). An overall agreement of at least 0.80 was required to proceed to the test phase. Phases 1, 2 and 3 used 14 patients (with varying degrees of hypermobility), 20 patients (50% cases) and 40 patients (50% cases), respectively. The inclusion criterion for cases was hypermobility (patients with Ehlers-Danlos Syndrome or BJHS) and for controls, non-hypermobility (patients with shoulder and/or back pain); patients were selected from patients files (phases 1 and 2) or included consecutively from our outpatient clinic (phase 3).
Results. The overall agreement in phase 2 was 0.95 for GJH and 0.90 for BJHS. Reproducibility for diagnosing GJH and BJHS in phase 3 showed kappa values of 0.74 and 0.84, respectively. Kappa in the Beighton tests for diagnosing GJH (currently or historically) was generally above 0.80, except for the fifth fingers and elbows (
0.60). In the Brighton tests for diagnosing BJHS, kappa was above 0.73, except for the skin signs (0.63). Lowest kappa was found in the Rotès-Quérol tests, where it was
0.57, except for the right shoulder (0.31).
Conclusion. We found a good-to-excellent reproducibility of tests and criteria for GJH and BJHS. Future research on the validity of the tests and criteria for joint hypermobility is urgently needed.
KEY WORDS: Hypermobility, Beighton tests, Brighton criteria, Rotès-Quérol tests, Standardized protocol
Submitted 15 April 2007;
revised version accepted 19 September 2007.
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