Background and Purpose: The shoulder complex mechanism includes scapulothoracic motion and glenohumeral motion during arm elevation. Pathology of rotator cuff muscles will bring mobility deficit in glenohumeral range due to poor muscle control and strength deficits. Methodology: In this study scapulothoracic rhythm was assessed with two inclinometers which measured glenohumeral elevation and scapular upward rotation. Scapulohumeral rhythm was calculated by taking ratio. Data was analyzed using Wilcoxon matched-pairs signed rank test used for comparison of affected with non-affected side. Results: Results showed that scapulohumeral rhythm is altered i.e., early scapular upward rotation and total reduced scapular upward rotation is noted for both flexion and abduction movement on affected side. Statistical significance was found in subjects with reduced ROM at glenohumeral joint for SHR during flexion as well as during abduction when compared to non-affected side. Indicating altered scapulohumeral rhythm in rotator cuff pathology patients. Conclusion: present study concludes that the scapulothoracic mechanism is altered in patients with rotator cuff pathology. Therefore, Assessment of scapulothoracic mechanisms is essential to address glenohumeral pathology and it should also be addressed in the treatment plan.