Department of Orthopaedic Surgery, Iwate Prefectural Central Hospital, Morioka, Japan.
Department of Orthopaedic Surgery, Tohoku University School of Medicine, Sendai, Japan.
J Shoulder Elbow Surg. 2020 Jan;29(1):139-145. doi: 10.1016/j.jse.2019.07.004. Epub 2019 Sep 11.
Evidence is scarce concerning the relationship of physical dysfunction of the trunk and lower extremities with elbow and shoulder pain in young baseball players. This study aimed to examine the association of joint flexibility of the trunk and lower extremities and dynamic postural control with elbow and shoulder pain among elite young baseball players.
We analyzed baseball players (aged 9-12 years) who participated in the National Junior Sports Clubs Baseball Festival. Range of motion in external rotation and internal rotation (IR) of the hip, as well as the finger-to-floor distance and heel-to-buttock distance, was measured. The straight-leg-raise test was also conducted. Dynamic postural control was evaluated using the Star Excursion Balance Test. Multivariable logistic regression analyses were conducted to examine the association of physical function with the elbow or shoulder pain incidence.
Of 210 players surveyed, 177 without elbow or shoulder pain were included in the analysis. Of the participants, 16 (9.0%) reported having elbow or shoulder pain during the tournament. Participants with the incidence of elbow or shoulder pain had a significant restriction in hip IR of the stride leg compared with those without pain (35.8° vs. 43.7°, P = .022). There were no significant associations of other joint flexibilities and the Star Excursion Balance Test with elbow or shoulder pain.
Decreased hip IR range of motion of the stride leg was significantly associated with the elbow or shoulder pain incidence. Players, coaches, and clinicians should consider the physical function of the trunk and lower extremities for the prevention of elbow and shoulder pain.
关于躯干和下肢的物理功能与年轻棒球运动员肘部和肩部疼痛之间的关系，证据很少。本研究旨在检查躯干和下肢关节柔韧性和动态姿势控制与优秀年轻棒球运动员肘部和肩部疼痛的关系。
我们分析了参加全国青少年体育俱乐部棒球节的棒球运动员（年龄 9-12 岁）。测量髋关节外旋和内旋的活动范围（IR），以及手指到地板的距离和脚跟到臀部的距离。还进行了直腿抬高试验。使用星形伸展平衡测试评估动态姿势控制。进行多变量逻辑回归分析，以检查身体功能与肘部或肩部疼痛发生率的关系。
在调查的 210 名运动员中，有 177 名没有肘部或肩部疼痛的运动员被纳入分析。在参与者中，有 16 名（9.0%）在比赛期间报告有肘部或肩部疼痛。与无疼痛者相比，肘部或肩部疼痛者的跨步腿髋关节内旋活动度明显受限（35.8° vs. 43.7°，P =.022）。其他关节柔韧性和星形伸展平衡测试与肘部或肩部疼痛均无显著相关性。
跨步腿髋关节内旋活动范围减小与肘部或肩部疼痛的发生率显著相关。运动员、教练和临床医生应考虑躯干和下肢的身体功能，以预防肘部和肩部疼痛。
