【論文摘要】Glenohumeral Total Rotation Motion Deficit and Associated Sport Injury in Collegiate Baseball Pitchers: A Preliminary Study

【論文摘要】大學棒球投手有盂肱關節整體旋轉角度缺損及相關運動傷害：初步研究

陳百鍊(Pai-Lian Chen) ； 顏碧慧(Pi-Hui Yen)

《物理治療》 43卷4期 (2018/12) Pp. 337-338

https://doi.org/10.6215/FJPT.201812.P34

摘要

Background and Purpose: A numbers of studies have proposed the total rotational motion (TRM) concept, where the amount of external rotation (ER) range of motion (ROM) and internal rotation (IR) ROM at 90° of abduction are added and a TRM arc is equal in both shoulder. Furthermore, the studies suggested that a TRM arc outside the 5° range may be a risk factor to shoulder injuries. Therefore, the purpose of this study was to evaluate the TRM deficit and associated history of sport injury along the kinetic chain. Methods: A total of thirteen male collegiate baseball pitchers volunteered to participate in this study. Bilateral glenohumeral IR and ER ROM were measured passively and summed for TRM. TRM deficit was defined as a range difference more than 5° between the TRM in the dominant and the nondominant arm. Information of pitchers’ background data and previous injuries were collected by a structured questionnaire. Results: There was a history of elbow injuries or complains in 61.4% of pitchers. The most common diagnosis was ulnar collateral ligament tear (38.46% of pitchers). Four pitchers (30.77%) have suffered from low back pain in the past. There were complains shoulder problems with the majority of diagnosis being partial rotator cuff tears (23.08% of pitcher). Two pitchers had been diagnosed with lateral ankle ligament sprain. Conclusion: Our study showed that pitchers who had TRM deficit more than 5° exhibited a greater risk to elbow and shoulder injury. When examining ROM in baseball pitchers. It is important to assess bilateral TRM. Clinical Relevance: The clinician may address a stretching program as part of the prevention and treatment of TRM deficit and associated sport injuries.