Shoulder Instability

Summary

Anterior shoulder instability is a common condition in young and athletic adults and can lead to recurrent dislocations or subluxations. When instability becomes recurrent, surgical treatment may be required. Beyond preventing further dislocation, an important question is whether surgery also restores normal shoulder mechanics and joint stability during movement.

This study investigated shoulder kinematics in patients with anterior instability using dynamic motion capture before and after surgical treatment. By comparing joint motion pre- and post-operatively, the project aimed to better characterize the biomechanical effects of instability and assess how surgical treatment influences shoulder stability and movement.

Partners

Artanim
Patient-specific shoulder modeling, motion analysis and biomechanical simulation.

La Tour Hospital – Elbow & Shoulder Orthopedics and Traumatology
Clinical evaluation and medical supervision.

Imaging Center Rive Droite SA
Radiological imaging acquisitions.

Related Publications

Elsenbsy A, Charbonnier C, Juillard V, Chagué S, Zbinden J, Collin P, Ahmed M, Tammam H, Said E, Lädermann A. Capsular Repair Matters for Residual Micromotion After Latarjet. An Externally Controlled Trial from the LaTour Group, HMSJ, 2(1), 2026.
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Collin P, Charbonnier C, Chagué S, Lädermann A. La réparation capsulaire est-elle importante pour le micromouvement résiduel après Latarjet. Essai prospectif contrôlé en externe., 17ème Congrès national de médecine et traumatologie du sport (SFTS), Beffroi de Montrouge, France, June, 2024.
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Lädermann A, Collin P, Chagué S, Charbonnier C. Does capsular repair matter for residual micromotion after Latarjet? A prospective and externally controlled trial, Rev Chir Orthop Traumatol, 109(8):S346, 2023.
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Lädermann A, Denard PJ, Tirefort J, Chagué S, Cunningham G, Charbonnier C. Est-ce que les stabilisations d’épaule stabilisent les épaules ?, Congrès de la Société Francophone d’Arthroscopie 2016, Paris, France, Rev Chir Orthop Traumatol, 102(8):S284-S285, December, 2016.
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Lädermann A, Denard PJ, Tirefort J, Kolo FC, Chagué S, Cunningham G, Charbonnier C. Does Surgery for Instability of the Shoulder Truly Stabilize the Glenohumeral Joint? A Prospective Comparative Cohort Study, Medicine (Baltimore), 95(31):e4369, 2016.
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Lädermann A, Charbonnier C. Kinematics of the Shoulder Joint, Leading Opinions, 2015.
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