The clinical effect of enhancing adductor co-contraction in Subacromial Pain Syndrome. A prospective single-centre randomised controlled trial

Recruiting

Conditions: Chronische schouderpijn
chronic shoulder pain
SAPS
Subacromial pain syndrome
10043237

Registration Number: NL-OMON55220

Lead Sponsor: eids Universitair Medisch Centrum

Brief Summary: Not available

Detailed Description: Not available

Recruitment & Eligibility

Status: Recruiting

Sex: Not specified

Target Recruitment: 80

Inclusion Criteria

In order to participate in this study, a subject must meet all of the following
criteria
- Chronic shoulder pain (>3months).
- Suspicion of subacromial origin of pain (e.g. combination of positive painful
arc test, Hawkins-Kennedy test and empty can test).
- Presence of conventional ultrasonography.
- Presence of conventional radiographs.

Exclusion Criteria

- Younger than 18 years of age;
- History of fracture or dislocation of the shoulder;
- History of surgery around the shoulder;
- Clinical and/or radiographic signs of comorbidities or alternative diagnoses
of the affected shoulder (glenohumeral instability,
glenohumeral/acromioclavicular osteoarthritis or arthritis, rheumatic disorder,
history of trauma of the affected shoulder, capsulitis adhesiva, full thickness
rotator cuff rupture, cervical radiculopathy, plexus lesions).
- Tendinitis calcarea >3mm, although part of saps; requires different treatment
methods.
- Symptomatic cervical spine pathology;
- Neoplasms;
- Pregnancy;
- Cognitive impairment;
- Electronic implants (e.g. Implantable Cardioverter Defibrillator, pacemaker);
- Insufficient Dutch language skills;
- Refusing physical therapy treatment (for example, due to the absence of
reimbursement);
- Refusing ultrasound guided subacromial corticosteroid injection;
- No informed consent.

Study & Design

Study Type: Interventional

Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
<p>Clinical outcomes are pain (Visual Analogue Scale), arm-shoulder function<br /><br>(Constant score).</p><br>

Secondary Outcome Measures

Name	Time	Method
<p>Bio-physical-social health (RAND-36, Shoulder Rating Questionnaire) and,<br /><br>self-reported quality of life (Western Ontario Rotator Cuff index).<br /><br>Co-contraction as assessed with EMG will be expressed using the Activation<br /><br>Ratio ([AR]; range [-1 to1]), indicating the task-related amount of antagonist<br /><br>activation relative to the same muscle*s degree of agonistic activation,<br /><br>corresponding to 1 in case of pure agonist muscle activation and -1 in case of<br /><br>pure antagonistic activation. Furthermore, movement complexity and<br /><br>proprioception, factors that potentially associate with the clinical course of<br /><br>SAPS will be assessed using electromagnetic motion analysis (Flock of Birds,<br /><br>FoB). Lastly, we will evaluate the content of care provided and compliance of<br /><br>the patients by asking the patients to fill out a registration form on the<br /><br>frequency, duration and content of treatment.</p><br>