COMPARISON BETWEEN THE ROTATIONAL RANGE AND STRENGTH OF GLENOHUMERAL JOINT AND CO-RELATION WITH ROTATOR CUFF TEAR IN BOWLERS AND RACQUET PLAYERS. (A PILOT STUDY)
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Abstract
Background: The human shoulder stands as the most flexible joint within our body, boasting an anatomical framework that ensures stability while facilitating an extensive range of motion in diverse orientations. The recurrent abduction-external rotation arm movement, frequently observed in activities like overhead actions in sports such as racquet playing and bowling, exposes the shoulder to an elevated risk of straining various surrounding structures. Among shoulder-related issues, disorders of the rotator cuff take precedence as the primary cause of impairment. This preliminary study seeks to evaluate the comparison between the rotational capacity and strength of the glenohumeral joint, while establishing a potential correlation with instances of rotator cuff tears in individuals engaged in bowling and racquet sports.
Materials & Methods: A well-structured survey was developed to gather information regarding participants, including their demographic details and responses to a questionnaire about shoulder discomfort. In this investigation, a total of 60 individuals meeting specific inclusion and exclusion criteria were selected for participation. These participants were randomly divided into two groups utilizing a random selection method. Before engaging in the study, participants provided their consent by signing a form indicating their willingness to take part, followed by furnishing personal demographic particulars. Subsequently, the subsequent actions were carried out: The range of motion was evaluated using a conventional 360° goniometer, while shoulder strength was assessed through manual muscle testing (MMT). The first group, denoted as Group A, consisted of 30 bowlers, while the second group, Group B, encompassed 30 racquet players.
Results: Based on our research discoveries, a significant contrast emerged in terms of glenohumeral rotational extents, strength of the rotator cuff, and the occurrence of rotator cuff tears when comparing Group A with Group B. The study's outcomes indicated a noteworthy elevation in external rotation range of motion (ROM) among bowlers. However, no substantial variance was observed in internal rotation ROM or strength when assessing the two sets. Furthermore, it became evident that bowlers exhibited a heightened incidence of rotator cuff tears in their dominant shoulder in comparison to racquet players.
Conclusion: The outcomes derived from this research indicate that bowlers exhibit a decreased average internal rotation range of motion (IR ROM) and an increased average external rotation range of motion (ER ROM) in comparison to racquet players. Moreover, a noteworthy connection between internal rotation ROM and the occurrence of rotator cuff tears was observed specifically among bowlers, while such a correlation was not evident among racquet players. These findings carry significance in terms of injury prevention strategies for both bowlers and racquet players targeting shoulder well-being.
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Bulbul
BPT Final year student Galgotias University
Monika Sharma
Associated professor in Physiotherapy, Galgotias university