Infraspinatus Muscle Atrophy in Professional Baseball Players

Author:

Cummins Craig Anthony1,Messer Terry M.2,Schafer Michael F.3

Affiliation:

1. Lake Cook Orthopedic Associates, Barrington, Illinois

2. Department of Orthopaedics, University of North Carolina

3. Department of Orthopaedic Surgery, Northwestern University Medical School

Abstract

Background Infraspinatus muscle atrophy has been observed in athletes who stress their upper extremities in an overhead fashion. The majority of such case reports have been in volleyball players, with far fewer cases reported in baseball players. Hypothesis Infraspinatus muscle atrophy occurs to a notable degree in professional baseball players. Study Design Retrospective cohort study. Methods At the end of the 1999 baseball season, data were collected from all Major League Baseball teams in regards to players affected with infraspinatus muscle atrophy. Results Twelve of the 1491 major league professional baseball players were identified as having appreciable infraspinatus muscle atrophy. There was an increased prevalence of the muscle atrophy in professional pitchers (10 of 494, 4%) compared to position players (2 of 997, 0.2%) (P< 0.001). Among affected pitchers, the atrophy was identified more frequently in starting pitchers (8 of 10) compared to relief pitchers (2 of 10) (P= 0.036), pitchers who had played for more years at the major league level (8.7 ± 4.9 versus 5.2 ± 4.0) (P= 0.017), and pitchers who had thrown for more innings at the major league level (971.4 ± 784.4 versus 485.0 ± 594.6) (P< 0.001). Conclusion Infraspinatus atrophy was identified in 4.4% of major league starting pitchers and occurred in those pitchers who pitched for more years and innings during their major league career.

Publisher

SAGE Publications

Subject

Physical Therapy, Sports Therapy and Rehabilitation,Orthopedics and Sports Medicine

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3