Shoulder Capsulitis
Conditions
Brief summary
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
Detailed description
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.
Interventions
PROCEDUREBiopsy
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.
Sponsors
GCS Ramsay Santé pour l'Enseignement et la Recherche
Ramsay santé
Study design
Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
DIAGNOSTIC
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 40 Years
Healthy volunteers
No
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.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Capsule Aspect | during biopsy | Normal capsule versus pathological capsule (abnormal capsule with disorganized framework, fragmented fibers, coiled ) |
Countries
France
Contacts
PRINCIPAL_INVESTIGATORRégis GUINAND, Dr
Clinique de l'Union - Ramsay-santé
Outcome results
None listed