Study aiming at determining the efficacy of eccentric versus concentric exercises for improving tendon biological characteristics, pain, and shoulder overall function for rotator cuff tendinopathy in patients with RA. Moreover, investigation the relationship between RA activity and the severity of rotator cuff tendinopathy.~Patients will be randomizations using computer random generated numbers. patients will receive either eccentric or concentric exercises for internal, external rotators and abductors muscles All patient will do stretching for posterior capsule and pectoralis minor Tendon biological changes and subacromial space will be assessed using musculoskeletal ultrasonography Shoulder function will be assessed using SPADI (shoulder pain and disability index Pain will be assessed using Visual Analogue Scale (VAS) Rheumatoid arthritis disease activity will be assessed using Disease Activity Score-28 for Rheumatoid Arthritis with erythrocyte sedimentation rate (DAS 28 ESR) patient will be assessed at base-line and after finishing of the study
Study aiming at determining the efficacy of eccentric versus concentric exercises for improving tendon biological characteristics, pain, and shoulder overall function for rotator cuff tendinopathy in patients with Rheumatoid arthritis (RA).~Moreover, investigation the relationship between RA activity and the severity of rotator cuff tendinopathy.~Patients will be randomly assigned into either concentric or eccentric exercise group. Randomizations will be done using computer random generated numbers.