Golden Oldie - Observational Scapular Dyskinesis: Known-Groups Validity in Patients With and Without Shoulder Pain

Review written by Ben Cormack info

Key Points

  1. Scapular dyskinesis is present in non-painful shoulders just as much as painful shoulders. This questions the validity of the assessment of shoulder dyskinesis.
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Scapular dyskinesis, altered movement or position of the scapular, is often proposed as a cause of shoulder pain. This study set out to look at two things - firstly if there was a difference in the prevalence of scapular dyskinesis between people with and without shoulder pain, and secondly if knowledge of the presence of pain (no blinding) has an effect on the rating of scapular dyskinesis using the scapular dyskinesis test (SDT).

Scapular dyskinesis is often proposed as a cause of shoulder pain.
It may be that there is no normal movement of the shoulder, and deviations from this proposed normal could just be part of the wide variation of normal human movement.


135 participants, 67 with pain and 68 without (control group), were recruited. This easily exceeded the priori power calculation of 108 participants. The participants were between 18-70 years of age and had pain of over 2 on an 11-point Numerical

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