Actively Recruiting
Determination of Scapulothoracic and Glenohumeral Angles by Imaging in Patients After Shoulder Arthroplasty (SCAP-imag)
Led by Ramsay Générale de Santé · Updated on 2025-03-14
25
Participants Needed
1
Research Sites
108 weeks
Total Duration
On this page
AI-Summary
What this Trial Is About
The shoulder is a site particularly affected by osteoarthritis since it affects up to 7% of the population aged over 65. To deal with osteoarthritis, total shoulder prosthesis is an increasingly used solution. Among the different types of total shoulder prostheses, the majority of surgical procedures involve the use of a reverse total shoulder prosthesis. This type of prosthesis modifies the anatomy of the shoulder in order to ensure better stability and mobility of the shoulder in patients while also compensating for potential significant lesions of certain deep muscles of the shoulder joint (i.e., rotator cuff). Reverse prostheses have good short-term results but these are impaired in longer term with a Constant functional score of around 70% at 10 years and a survival rate of 70% after 20 years. Problems of bone conflicts between the scapula and the humerus can also be observed on these reverse total shoulder prostheses with variable rates from 4.6% to 47.3% depending on the position of the prosthesis. In order to minimize the risk of complications, several tools are available to surgeons to optimize the positioning of the prosthesis. Planning software can be used to plan the kinematics of the shoulder after arthroplasty and quantify shoulder movements by 1/ estimating the scapulothoracic and glenohumeral angles, and 2/ determining the scapulohumeral rhythm (i.e., joint coordination index evaluating the relative contribution of these two joints to the total elevation of the arm). This prediction allows the surgeon to adapt the size, shape and position of the implants to each patient in order to ensure optimal shoulder kinematics, namely a maximum amplitude without bone conflicts (contacts) between the scapula and the humerus. The main objective of this study is to evaluate the influence of a reverse shoulder arthroplasty on shoulder kinematics at 2 years postoperatively in comparison with the non-operated contralateral limb.
CONDITIONS
Official Title
Determination of Scapulothoracic and Glenohumeral Angles by Imaging in Patients After Shoulder Arthroplasty (SCAP-imag)
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Reverse total shoulder arthroplasty surgery performed by Dr. Lionel Neyton (Jean Mermoz Private Hospital, 69008 Lyon) 24±3 months before inclusion
- Have had a CT scan of the operated shoulder before surgery
- Patient has signed informed consent
- Patient is affiliated to or beneficiary of a social security scheme according to Article L.1124-1 of the Public Health Code
You will not qualify if you...
- Contraindication to EOS® examination
- Body size incompatible with EOS imaging
- Pregnant, in labor, or breastfeeding women
- History of fracture in humerus, scapula, or clavicle
- History of surgery on the shoulder or contralateral upper limb to the prosthesis
- Adult under legal guardianship, curatorship, judicial or administrative deprivation of liberty
AI-Screening
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Trial Site Locations
Total: 1 location
1
Hopital privé Jean Mermoz
Lyon, France, 69008
Actively Recruiting
Research Team
L
Lionel Neyton, Dr
CONTACT
How is the study designed?
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
NA
Model
SINGLE_GROUP
Primary Purpose
OTHER
Number of Arms
1
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