Analysis of Proinflammatory Factors in the Synovial Fluid In Patients With Rotator Cuff Disease

This study will include a consecutive series of patients who met the study inclusion criteria. Study group patients will be diagnosed RC tear on clinical examination and imaging findings (US and MRI) that will be verified at arthroscopy in order to complete the enrollment.

Control group will include patients suffering from shoulder instability that scheduled for elective surgical repair.

Inclusion Criteria:

1. Ability to understand and accept the trial procedures and to sign an informed consent form in accordance with national legislation.
2. Patients between age 18-65 scheduled for a surgery in a Shoulder unit
3. Patients suffering from Rotator Cuff Disease
4. Patients suffering from any noninflammatory shoulder condition which requires surgical intervention

Exclusion Criteria:

1. Revision rotator cuff repair
2. Recurrent shoulder surgery
3. Psychiatric illness
4. Inflammatory condition.
5. Current use of anti-inflammatory drugs.
6. Previous or current shoulder infection.