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Test-retest reliability of myofascial trigger point detection in patients with rotator cuff tendonitis

King Fahad Hospital, Madina Al-Munawarah, Saudi Arabia

Jacquelline A Oldham

Centre for Rehabilitation Science, University of Manchester, Manchester, UK

Objectives: To investigate the test-retest reliability of the following clinical diagnostic characteristics of myofascial trigger points: taut band, spot tenderness, jump sign, pain recognition, referred pain and local twitch responses (LTRs).

Design: Test-retest reliability study.

Setting: This study was undertaken in an outpatient physiotherapy department.

Subjects: Fifty-eight patients (31 males and 27 females) with rotator cuff tendonitis were recruited into this study.

Intervention: Rotator cuff muscles were assessed by an expert for the presence or absence of the main clinical diagnostic characteristics of trigger point assessment. The process was then repeated three days later by the same expert.

Main measures: Outcomes included the presence or absence of: a taut band, spot tenderness, jump sign, pain recognition, referred pain and LTRs.

Results: Kappa values between testing situations for the taut band, spot tenderness, jump sign and pain recognition were 1. Kappa scores for referred pain ranged between 0.79 and 0.88 and for the local twitch response between 0.75 and 1 depending on the muscles under investigation.

Conclusions: The presence or absence of the taut band, spot tenderness, jump sign and pain recognition was highly reliable between sessions. Referred pain and local twitch response reliability varied depending on the muscle being studied.

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				J. Z. Srbely and J. P. Dickey Randomized controlled study of the antinociceptive effect of ultrasound on trigger point sensitivity: novel applications in myofascial therapy? Clinical Rehabilitation, May 1, 2007; 21(5): 411 - 417. [Abstract] [PDF]