The role of the subscapularis in massive rotator cuff tears: A prospective cohort with biomechanical and clinical assessments.

Withdrawn

Conditions: Degenerative subscapularis tear
rotator cuff tendon tear
10043237

Registration Number: NL-OMON48890

Lead Sponsor: eids Universitair Medisch Centrum

Brief Summary: Not available

Detailed Description: Not available

Recruitment & Eligibility

Status: Withdrawn

Sex: Not specified

Target Recruitment: 30

Inclusion Criteria

Patients diagnosed with a degenerative subscapularis tear (i.e. involvement of
the supraspinatus and subscapularis) based on clinical examination (i.e.
positive lift-off or belly press test) and confirmed by Magnetic Resonance
Arthrography (MRA), who are planned to undergo an open subscapularis tendon
repair. Patients are also included in case of additional infraspinatus
involvement (i.e. not a reason to exclude a patient).

Exclusion Criteria

- Younger than 18 years of age
- Isolated subscapularis tears (e.g. traumatic)
- Teres minor tear
- Radiographic osteoarthritis of the glenohumeral joint of Kellgren Lawrence >
grade 2 and/or acromioclavicular joint and/or sternoclavicular joint
- History of fractures or dislocations of the shoulder
- Contraindications for surgery
- Tumours
- Insufficient Dutch language skills
- No informed consent
- Electronic implants (e.g. ICD, pacemakers)

Study & Design

Study Type: Observational non invasive

Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
<p>1) muscle activation assessed with electromyography and expressed as activation<br /><br>ratios of the deltoid muscle, latissimus dorsi, pectoralis major and teres<br /><br>major, </p><br>

Secondary Outcome Measures

Name	Time	Method
<p>2) external rotation in 90 * humeral elevation in the coronal plane with elbow<br /><br>flexed in 90 * (electromagnetic tracking device), 3) clinical outcome (medical<br /><br>history, clinical examination, VAS (pain), CS, WORC, SF-12, three anchor<br /><br>questions, RC-muscle quality MRA).</p><br>