Erickson Brandon J, Chalmers Peter N, Zajac John, Sgroi Terrance, Eno Jonathan James, Altchek David W, Dines Joshua S, Coleman Struan H
Department of Orthopaedic Surgery, Rothman Orthopaedic Institute, New York, New York, USA.
Department of Orthopaedics, University of Utah, Salt Lake City, Utah, USA.
Orthop J Sports Med. 2019 Aug 27;7(8):2325967119866734. doi: 10.1177/2325967119866734. eCollection 2019 Aug.
There are many risk factors for shoulder and elbow injuries in professional baseball pitchers. The elbow carrying angle has not been studied as a potential risk factor.
PURPOSE/HYPOTHESIS: The aim of this study was to determine whether elbow carrying angle is a risk factor for shoulder or elbow injuries in professional baseball pitchers. We hypothesized that pitchers with a higher elbow carrying angle would be less likely to sustain an injury during the season than pitchers with a lower elbow carrying angle.
Cohort study; Level of evidence, 2.
All professional pitchers for a single baseball club during the 2018 season had the carrying angle of both elbows measured at spring training by a single examiner. The pitchers were followed prospectively throughout the season. Shoulder and elbow injuries were recorded prospectively.
A total of 52 pitchers (21 [40%] Major League Baseball and 31 [60%] Minor League Baseball) were included. During the season, 23 (44%) pitchers became injured. The mean carrying angle in the throwing arm was 12.5° ± 4.2° versus 9.9° ± 2.8° in the nonthrowing arm ( < .001). Comparing the injured and noninjured groups, there were no differences in level of play ( = .870), throwing hand dominance ( = .683), batting hand dominance ( = .554), throwing-side carrying angle ( = .373), nonthrowing-side carrying angle ( = .773), or side-to-side difference in carrying angle ( = .481).
The elbow carrying angle was not associated with an injury risk during a single season in professional baseball pitchers.
职业棒球投手的肩部和肘部损伤存在多种风险因素。肘部提携角尚未作为潜在风险因素进行研究。
目的/假设：本研究的目的是确定肘部提携角是否为职业棒球投手肩部或肘部损伤的风险因素。我们假设，与肘部提携角较低的投手相比，肘部提携角较高的投手在赛季中受伤的可能性较小。
队列研究；证据等级，2级。
在2018赛季，由一名检查人员在春季训练时测量了一家棒球俱乐部所有职业投手双肘的提携角。在整个赛季中对这些投手进行前瞻性跟踪。前瞻性记录肩部和肘部损伤情况。
共纳入52名投手（21名[40%]美国职业棒球大联盟球员和31名[60%]美国职业棒球小联盟球员）。在赛季中，23名（44%）投手受伤。投球手臂的平均提携角为12.5°±4.2°，而非投球手臂为9.9°±2.8°（P<0.001）。比较受伤组和未受伤组，在比赛水平（P = 0.870）、投球手优势（P = 0.683）、击球手优势（P = 0.554）、投球侧提携角（P = 0.373）、非投球侧提携角（P = 0.773）或提携角的左右差异（P = 0.481）方面均无差异。
在职业棒球投手的单个赛季中，肘部提携角与受伤风险无关。
