The Latarjet-type Procedure Using the SEM Positioner: Using a Scan to Assess Consolidation

Study Overview
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Brief Summary
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The main objective of this study is to evaluate, after surgery for chronic anterior shoulder instability using a Latarjet technique with positioning of the bone block via an SEM positioning tool, the value of the contribution of a shoulder scan at 3 months post surgery in the decision to return to activity early as conditioned by the quality of the bone block consolidation.

Detailed Description
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The secondary objectives of this study are to assess: A. the position of the block according to a shoulder scan at 3 months post-surgery B. functional scores (Constant, Walch-Duplay) at 6 weeks, 3 and 6 months post surgery. C. Complications: osteoarthritis, lysis of the block. D. pain. E. date of return to full activity. F. patient satisfaction concerning care (visual analog scale at 6 months post-surgery).

Official Title
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Treatment of Chronic Anterior Shoulder Instability by a Latarjet-type Bone Block Procedure Using the SEM (Science Et Medecine) Positioning Tool: Using a Scan to Assess Consolidation and Return to Normal Activity at 3 Months

Conditions
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Shoulder Dislocation

Intervention / Treatment
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* Procedure: Scan of shoulder


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: The patient must have given his/her informed and signed consent The patient must be insured or beneficiary of a health insurance plan The patient was operated for chronic anterior shoulder instability (defined by a history of at least two true dislocations and an ISIS score> 2) 6 weeks ago (+/- 5 days) Exclusion Criteria: The patient is participating in another study The patient is in an exclusion period determined by a previous study The patient is under judicial protection, under tutorship or curatorship The patient refuses to sign the consent It is impossible to correctly inform the patient The patient is pregnant, parturient, or breastfeeding

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 45 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Study population<br>The patients included have been operated for chronic anterior shoulder instability by a Latarjet-type bone block procedure using the SEM (Science Et Medecine) positioning tool within the past 3 months. Intervention: Scan of shoulder | Procedure: Scan of shoulder<br>* A scan (no injection) of the concerned shoulder will be performed at 3 months post-surgery. Cuts in three planes of space, including all of the glenoid. 3D reconstructions.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Did the patient return to activity at 3 months? yes/no |  | Week 6 after inclusion, which = 3 months after surgery | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Constant score |  | week -6 | 
| Constant score |  | day 0 (study inclusion) | 
| Constant score |  | week 6 | 
| Constant score |  | week 18 | 
| Walch-Duplay score |  | week -6 | 
| Walch-Duplay score |  | day 0 (study inclusion) | 
| Walch-Duplay score |  | week 6 | 
| Walch-Duplay score |  | week 18 | 
| Presence/absence of complications |  | day 0 (study inclusion) | 
| Presence/absence of complications |  | week 6 | 
| Presence/absence of complications |  | week 18 | 
| Visual analog scale for pain |  | day 0 (study inclusion) | 
| Visual analog scale for pain |  | week 6 | 
| Visual analog scale for pain |  | week 18 | 
| Date of return to total activity |  | week 18 | 
| Visual analog scale for satisfaction |  | week 18 |