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Related Experiment Video

Updated: Jul 24, 2026

Three-dimensional Navigation-guided, Prone, Single-position, Lateral Lumbar Interbody Fusion Technique

Three-dimensional Navigation-guided, Prone, Single-position, Lateral Lumbar Interbody Fusion Technique

Published on: July 15, 2021

Kinematic stabilization after the Latarjet procedure: beyond the triple blocking effect.

Olimpio Galasso¹, Michele Mercurio¹, Claudia Mancuso¹

¹Department of Orthopaedic and Trauma Surgery, "Magna Græcia" University, "Renato Dulbecco" University Hospital, Catanzaro, Italy.

Journal of Shoulder and Elbow Surgery

|March 28, 2024

Summary

The Latarjet procedure for shoulder instability results in increased scapular posterior tilt and internal rotation. This kinematic change may enhance shoulder stability beyond the known "triple blocking" effects.

Keywords:

Latarjet procedure Shoulder instability conjoined tendon pectoralis minor scapular tilt scapulohumeral rhythm shoulder kinematics triple blocking effect

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Published on: February 14, 2025

Area of Science:

Orthopedic Surgery
Biomechanics
Sports Medicine

Background:

The Latarjet procedure is a common surgical intervention for recurrent shoulder instability, aiming to enhance stability through a "triple blocking" effect.
While effective, concerns exist regarding the nonanatomic nature of the procedure and its complete restoration of joint stability.
Scapulohumeral rhythm analysis offers a novel perspective for evaluating functional shoulder kinematics post-Latarjet procedure.

Purpose of the Study:

To compare shoulder kinematics between patients who underwent the Latarjet procedure and a healthy population.
To investigate the effects of the Latarjet procedure on scapulohumeral rhythm using advanced motion analysis.

Main Methods:

Retrospective study with prospective data collection on 28 patients who underwent the open Latarjet procedure.
Minimum 12-month follow-up including range of motion, Rowe, and Constant-Murley scores.
Three-dimensional shoulder kinematics assessed using the ShowMotion 3D kinematic tracking system with magnetic and inertial measurement units.

Main Results:

All patients demonstrated graft union and achieved high clinical scores (Constant-Murley: 94.5, Rowe: 96.7) with no signs of arthritis at mean 32.4-month follow-up.
Significantly greater scapular posterior tilt and internal rotation were observed in the Latarjet group compared to healthy controls across the entire range of motion (P < .05).
No significant differences were found in upward/downward scapular rotation between the groups.

Conclusions:

The Latarjet procedure leads to a persistent increase in scapular posterior tilt and internal rotation.
These kinematic modifications suggest an additional shoulder-stabilizing effect beyond the traditional "triple blocking" mechanisms.
The findings provide new insights into the functional rationale of the Latarjet procedure by analyzing its impact on shoulder kinematics.