WHO WILL REDISLOCATE HIS/HER SHOULDER? PREDICTING RECURRENT INSTABILITY FOLLOWING A FIRST TRAUMATIC ANTERIOR SHOULDER DISLOCATION

Review written by Dr Michael Reiman info

BACKGROUND & OBJECTIVE

Recurrent instability following an initial shoulder dislocation ranges from 26% to 92%. The objective of this study was to develop a multivariate tool that would help predict recurrent instability after a first-time traumatic anterior shoulder dislocation.

METHODS

This was a cohort study examining risk factors to assist in determining risk factors that predisposed subjects to recurrent shoulder instability. An age range of 16 to 40 years was included. Primary exclusions were surgery within 12 weeks of current condition, and other condition(s) besides anterior instability. These were primarily posterior or inferior dislocation, or acromioclavicular injury.

The authors powered the study at 90% with a 50% dropout rate. Data was collected prospectively after participants gave consent, allowing access to to radiographs, etc. Participants independently reported primary (age,gender) and secondary (quality of life, and patient-reported outcome measures [PROMs]) data.

PROMs collected included the Western Ontario Shoulder Instability Index (WOSI), Shoulder Activity Scale (SAS), Shoulder Pain and Disability Index (SPADI), and Tampa Scale of Kinesiophobia (TSK-11). Radiology reports were used to confirm anterior dislocation. Participants also reported any indications of recurrent instability.

RESULTS

  • 128 participants with a mean age of 24.6 7.1 (110 were male)
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