The purpose of this study is to evaluate the effectiveness of ARTHRO distension plus intensive mobilisation in shoulder capsulitis.

The aim of the study is to evaluate a treatment of shoulder capsulitis that associates ARTHRO distension and intensive mobilisation at 2, 6, 12, 26 and 52 weeks. It is a bicentric 87-month (inclusion: 74 months; follow up: 13 months) observer blind randomised clinical trial using 2 groups in parallel. The number of patients to be included is 66. The treatment that is evaluated associates ARTHRO distension followed by mobilisation of the shoulder 6 hours per day during 5 days, and then sessions of physiotherapy for 4 weeks. The control intervention is one intra-articular injection of corticosteroids and physiotherapy. The primary outcome is SPADI, namely pain and disability, at 2 weeks.

Inclusion Criteria:

• age ≥ 18 years
• shoulder capsulitis
• duration of symptoms ≥ 3 months
• health insurance

Exclusion Criteria:

• cognitive disorders
• Hypo coagulation
• biological inflammatory syndrome
• uncontrolled diabetes
• XYLOCAINE allergy
• pregnancy
• unable to understand and to speak french
• previous surgery of shoulder
• shoulder infiltration or distension in the previous month
• local contraindication to shoulder infiltration