【論文摘要】Association With Hip Internal Rotation Deficit and Sport Injury in Collegiate Baseball Pitchers: A Pilot Study

【論文摘要】大學棒球投手具有髖關節旋轉角度缺損和運動受傷之相關：前驅研究

陳百鍊(Pai-Lian Chen) ； 顏碧慧(Pi-Hui Yen)

《物理治療》 43卷2期 (2018/06) Pp. 168-169

https://doi.org/10.6215/FJPT.2018.75.P36

摘要

Background and Purpose: The throwing motion is a total body activity that requires coordination of the lower extremity, hip, trunk, and upper extremity for proper execution. Hip motion is important to develop necessary torque and velocity for overhead activity. Repetitive rotational stress in the hip may lead to sportspecific range of motion (ROM) adaptations. Which may increase the risk of injury in lower extremity. Therefore, the purpose of this study was to evaluate when hip rotation ROM adaptations and associated with a history of injury to hip or other joints in the lower extremity. Methods: Twenty-eight collegiate baseball pitchers participated in this study. All players underwent a comprehensive preparticipation physical health status examination. Hip ROM was assessed using a customized standard goniometer and hip side to side differences in rotational parameters were calculated. Hip internal rotation deficit (HIRD) as defined is a loss of internal rotation (IR) of the dominant hip of 10° or more as compared with the nondominant hip. Results: Ankle injuries or complaints, mostly at the dominant side, were reported in 42.86% of pitcher. Low back complaints, mostly minor, were reported in 25% of pitchers. Hamstrings strain were reported in 4 (14.29%) pitchers, and two of them involved the dominant side. Knee complaints, mostly meniscal tear or medial collateral ligament rupture, were reported in (3.5% of pitchers). Conclusions: These data suggest pitchers with HIRD may be associated with ankle sprain and nonspecific low back pain in baseball pitchers. Although the cause and effect relationship between HIRD and injuries are uncertain. Clinical Relevance: An understanding of hip ROM adaptations in baseball pitchers may help clinicians to examine inadequacies and provide various preventive interventions for baseball pitchers.