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Journal of Shoulder and Elbow Surgery

Scapular dyskinesis after Latarjet procedure

Published:October 08, 2015DOI:https://doi.org/10.1016/j.jse.2015.08.001

      Background

      Because of detachment of the pectoralis minor and variation of the vector of the conjoint tendons, we hypothesized that the Latarjet procedure may alter scapular position and motion. The purpose of this study was to evaluate scapular position and motion in patients who underwent a Latarjet or a modified iliac crest bone graft transfer (ICBGT) procedure (J-bone graft).

      Methods

      Forty-six consecutive patients treated for recurrent anterior shoulder dislocation between 2010 and 2012 were retrospectively enrolled. Twenty-three were treated with a Latarjet and 23 with an ICBGT procedure. Twenty Latarjet and 20 ICBGT patients were available at a mean follow-up of 20 months (min, 12; max, 60). We recorded the Western Ontario Instability Index, the Rowe Score, and the Subjective Shoulder Value. Scapulothoracic position was studied according to the dyskinesis yes/no method. Intraobserver and interobserver reliability of the dyskinesis assessment was assessed.

      Results

      Intraobserver and interobserver reliability of scapula dyskinesis assessment was high (Latarjet: intratester, κ = 0.84; intertester, κ = 0.75; ICBGT: intratester, κ = 0.78; intertester, κ = 0.71). Scapular dyskinesis was observed after 5 of 20 Latarjet and after 0 of 20 ICBGT procedures (P = .047). Patients with dyskinesis had lower scores (Western Ontario Instability Index, P = .043; Rowe, P = .047; Subjective Shoulder Value, P = .046), but no statistically significant difference was found between the Latarjet and ICBGT groups. Two of the 5 scapular dyskinesis patients reached the SICK (Scapular malposition, Inferior medial scapular winging, Coracoid tenderness, and scapular dysKinesis) scapula syndrome definition.

      Conclusions

      Scapular dyskinesis was found in 5 of 20 patients who underwent a Latarjet procedure. Dyskinesis may be related to the detachment of the pectoralis minor, and variation of the vector and the working length of the coracobrachialis and the short head of the biceps.

      Level of evidence

      Keywords

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