Cervical Stabilization Exercises IN Subacromial Impingement Syndrome

The goal of this clinical trial study is to determine efficacy of adding cervical stabilization exercises (CSEs) to conventional physical therapy (PT) program on pain severity, shoulder function disability, kinesiophobia, shoulder range of motion (ROM), isometric muscle strength and upper limb (UL) functional activity in closed kinetic chain in patients with SIS. The main questions it aims to answer is: What are the effects of adding cervical stabilization exercises to a conventional physical therapy program in the management of shoulder impingement syndrome? Researchers will compare two groups: one group will receive CSEs beside the conventional PT program to the another group will receive the conventional PT program.

Inclusion Criteria: * Male and female patients with unilateral SIS. * Age is 20-40 years old. * Presence of pain on anterolateral aspect of the shoulder for at least three months. * At least 3 of the following criteria; positive Neer, Hawkins, and Empty can tests, Painful arc, and pain during resisted isometric abduction or external rotation. Exclusion Criteria: * Shoulder surgery, injury and arthritis. * Any anatomical anomalies as hooked acromion. * Cervical radiculopathy. * Other systemic diseases: cardiovascular diseases, respiratory diseases and neurological diseases.