Study of the Antipodal Capsular Fold and Its Potential Role in Antero-inferior Glenohumeral Instability

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

40 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-08-26

Study Completion Date

2021-09-30

Brief Summary

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In schoulders instabilty, the soft tissue has not been the subject of histological studies, as has the "bare area" or zone devoid of cartilage, the exact role of which in glenohumeral biomechanics is unknown. This research is based on the hypothesis that the antipodal lesions are constant, underestimated and that an architectural disorganization at the capsulo-ligament level could contribute to the instability of the shoulder. The aim of this study is therefore to better characterize these lesions which could be the subject of a complementary stabilization procedure even in the absence of a humeral notch

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Detailed Description

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Surgery for unstable shoulders sometimes involves repairing lesions that promote instability. These lesions are identified on imaging before surgery and then during the operation, but they are macroscopically inconsistent on genuine unstable shoulders. While the importance of posterior capsuloligamentous structures (soft tissue) in antero-inferior stability has been the subject of biomechanical studies, the soft tissue has not been the subject of histological studies, as has the "bare area" or zone devoid of cartilage, the exact role of which in glenohumeral biomechanics is unknown. However, this research is based on the hypothesis that the antipodal lesions are constant, underestimated and that an architectural disorganization at the capsulo-ligament level could contribute to the instability of the shoulder. The aim of this study is therefore to better characterize these lesions which could be the subject of a complementary stabilization procedure even in the absence of a humeral notch.

Conditions

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Shoulder Capsulitis

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

NONE

Study Groups

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Instability shoulder group

Patients operated for an antero-inferior shoulder instability

Group Type EXPERIMENTAL

Biopsy

Intervention Type PROCEDURE

The biopsy will be performed at the level of the capsular fold located just above the area devoid of cartilage in the postero-superior region of the humeral head, near the area where Hill Sachs notches occur.

Non instability shoulder group

Patients without shoulder instability, operated for another reason.

Group Type OTHER

Biopsy

Intervention Type PROCEDURE

The biopsy will be performed at the level of the capsular fold located just above the area devoid of cartilage in the postero-superior region of the humeral head, near the area where Hill Sachs notches occur.

Interventions

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Biopsy

The biopsy will be performed at the level of the capsular fold located just above the area devoid of cartilage in the postero-superior region of the humeral head, near the area where Hill Sachs notches occur.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

Instability Group

* Patient, male or female, over 18 years old and up to 40 years old
* Patient operated for antero-inferior shoulder instability
* Subject affiliated or beneficiary of a social security scheme
* Patient having signed the free and informed consent comparativ group
* Patient, male or female, over 18 years old and up to 40 years old
* Patient operated for a reason other than unstable shoulder
* Subject affiliated or beneficiary of a social security scheme
* Patient having signed the free and informed cons

Exclusion Criteria

* History of surgery on the affected shoulder
* Capsuloligamentous disease (Ehler Danlos)
* History of instability (dislocation, subluxation) in witnesses
* Patient participating in another clinical study
* Protected patient: adult under guardianship, curatorship or other legal protection, deprived of liberty by judicial or administrative decision;
* Pregnant, breastfeeding or parturient woman;
* Patient hospitalized without consent.

Minimum Eligible Age

18 Years

Maximum Eligible Age

40 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No