Please select the eligibility criteria that correspond to the clinical trial below.
Title: Assessment of Dynamic Humeral Centering in Impingement Syndrome: a Randomized Clinical Trial
Brief Summary: The purpose of this study is to determine wether dynamic humeral centering is effective in patients with impingement syndrome of the shoulder


Options:
A: Inclusion Criteria:

* Subacromial shoulder pain lasting for at least three months and age between 18 and 70 years.
* Dysfunction or pain on abduction
* Had a normal passive glenohumeral range of movement
* Pain during two of three isometric tests (abduction, external- or internal rotation at 0º or 30º)
* Positive Hawkins-Kennedys test.

Exclusion Criteria:

* Shoulder pain bilateral (both shoulders required treatment)
* Earlier operated in affected shoulder
* Had multidirectional instability
* Had the cervical syndrome
* Rheumatoid arthritis
* Clinical and radiological findings indicating glenohumeral - or acromioclavicular joint pathology
* Not able to understand spoken or written Norwegian
* Considerable emotional distress
* Needed anticoagulant medicine
* Being pregnant
* Had had Shock Wave Therapy or Supervised Exercises before.
B: Inclusion Criteria:

* diagnosis of CRCP as evident by symptoms and signs including pain on active abduction or external rotation and positive impingement test;
* symptoms of pain in shoulder for \> 3 months;
* average movement pain \> 3 on a 10 cm visual analogue scale;
* aged ≥ 18 years;
* able to understand written and spoken English.

Exclusion Criteria:

* severe pain at rest, defined as \> 7 on a visual analogue scale;
* global restriction of shoulder movements;
* systemic inflammatory joint disease;
* x-ray evidence of shoulder osteoarthritis or fracture;
* calcification about the shoulder joint;
* reason to suspect a complete rotator cuff rupture (eg. weakness of arm elevation, a positive "drop arm sign", a high riding humerus visible on x-ray or a complete tear on ultrasound);
* previous shoulder surgery on affected arm;
* physiotherapy, corticosteroid injection or hydrodilatation for shoulder in past 3 months;
* commenced non-steroidal antiinflammatory medication (NSAIDs) or conservative intervention in past 2 weeks.
C: Inclusion Criteria:

* age \> 30 years
* pain duration \> 1 month
* presence of at least 2 positive impingement test results from Neer, Yocum and Hawkins testing
* total Constant score \< 80.

Exclusion Criteria: concerning the shoulder

* stiffness
* anteroposterior instability
* tendinous calcification
* corticosteroid injection within the previous 30 days
* previous surgery
* humeral fracture
* inflammatory joint disease
* neoplastic disorders
D: Inclusion Criteria:

* working as a nurse
* technician or nursing assistant in the hospital
* make medical diagnosis of disorder in the rotator cuff (impingement, injury or rupture of the cuff)
* does not make a medical diagnosis of cognitive impairment
* were receiving no another type of treatment for shoulder pain (eg medicines,acupuncture, massage)
* availability and interest in participating in therapy and accept to participate in the survey.

Exclusion Criteria:

* patients with pain that would prohibit their participation in the program with a medical diagnosis of cognitive impairment,
* associated with debilitating diseases,
* previous surgery of the shoulder,
* other specific conditions of the shoulder joint (adhesive capsulitis,
* degenerative osteoarthritis of the glenohumeral joint,
* tendon calcification) and do not accept to join the study.

Answer: C