09_T006_690.doc - RAJIV GANDHI UNIVERSITY OF HEALTH...

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6 Brief resume of the intended work: 6.1 Need for the study: The scapula plays a major role in facilitating optimal shoulder function. Scapular anatomy and bio-mechanics interact to produce efficient movement .In normal upper quarter function the scapula provides a stable base from which glenohumeral mobility occurs. Stability at scapulothoracic joint depends on surrounding musculature. Many muscles serve to stabilize the scapula, the main stabilizers are the levetor scapulae, rhomboids major and minor, serratus anterior and trapezius. 1 The upper trapezius, lower trapezius and serratus anterior muscles are considered to be the upwards rotators of scapula. These muscles play an integral part in scapula movement during scapulo humeral rhythm. 4 Along with upper and lower portion of trapezius muscle, serratus anterior forms a force couple that upwardly rotates the scapula and also elevate the acromion. 5 The most common scapula muscles which will go for weakness or inhibition are lower stabilizers of scapula (serratus anterior, rhomboids, middle and lower trapezius). This problem manifests itself through decreased shoulder abduction and secondary impingement .1a, 2,3 Scapulo humeral rhythm or scapular position may be altered with different condition that include increase loading, muscle fatigue, impingement syndrome, instability of glenohumeral joint or postural changes. 6a,b,7 RAJIV GANDHI UNIVERSITY OF HEALTH SCIENCES, BANGALORE, KARNATAKA. ANNEXURE II PROFORMA FOR REGISTRATION OF SUBJECT FOR DISSERTATION 1 Name of the candidate and Address PATEL PRAGNESH BABUBHAI SRINIVAS COLLEGE OF PHYSIOTHERAPY, PANDESHWARA, MANGALORE-575001. 2 Name of the Institute SRINIVAS COLLEGE OF PHYSIOTHERAPY, MANGALORE . 3 Course of study and Subject Master of Physiotherapy (MPT) 2 years Degree Course. “Musculoskeletal and sports physiotherapy” 4 Date of Admission To course 27.05.2007 5 Title of the Topic A STUDY TO ANALYSE EMG ACTIVITY OF TRAPEZIUS AND SERRATUS ANTERIOR MUSCLES CO-ACTIVATION DURING DIFFERENT REHABILITION EXERCISES ”
The kinematic alteration in scapular motion have been linked to decrease in serratus anterior muscle activity, increase in upper trapezius muscle activity ,or imbalance of forces between the upper trapezius and lower part of the trapezius muscles. 12,13,14 Abnormal scapulo humeral rhythm or decrease in upwards rotation of scapula during humeral elevation have been linked to ‘imbalance’ in force production of the upper and lower portion of trapezius and serratus anterior muscles. 5a,b,c .Inadequate upwards rotation during the painful arc of motion is believed to be potential contributor to development or progression of impingement syndrome . 11 One goal of shoulder rehabilitation should to be restore normal scapulo humeral rhythm and that may require exercises focusing on trapezius and serratus anterior. 6 There are only few studies were conducted to find the co- activation exercises of trapezius and serratus anterior muscles. In impingement syndrome there is an over activation of upper

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