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首页> 外文期刊>Orthopaedic Journal of Sports Medicine >Osteochondritis Dissecans of the Humeral Capitellum in Young Athletes
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Osteochondritis Dissecans of the Humeral Capitellum in Young Athletes

机译：青年运动员肱骨头肱骨软骨炎

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Background:Osteochondritis dissecans (OCD) lesions are often observed in the humeral capitellum both in young baseball players and gymnasts. It is generally believed that capitellar OCD in baseball players can be seen on an anteroposterior (AP) radiograph with the elbow in 45° of flexion. However, the mechanism of injury seems to be different in baseball players and gymnasts. Repetitive valgus overload with the elbow in flexion is believed to be the cause of capitellar OCD lesions in baseball players, whereas weightbearing with the elbow in extension may be the cause of OCD in gymnasts.Purpose:To determine the difference in capitellar OCD location between baseball players and gymnasts and to propose the optimal AP radiographic angle of the elbow for visualization of early-stage OCD lesions in adolescent gymnasts.Study Design:Cross-sectional study; Level of evidence, 3.Methods:Subjects consisted of 95 baseball players (95 elbows) and 21 gymnasts (24 elbows) with a mean age of 13.7 years (range, 11-18 years). To localize the lesion, inclination of the affected area in the humeral capitellum against the humeral axis was investigated using sagittal computed tomography images of the elbow. The inclination angle was defined as the angle between the long axis of the humerus and the line perpendicular to a line that connected the anterior and posterior margin of the lesion. The inclination angle in each group was compared and statistically analyzed.Results:The mean inclination angle was 57.6° ± 10.7° in baseball players and 28.0° ± 10.7° in gymnasts. Capitellar OCD lesions were located more anterior in baseball players when compared with gymnasts (P < .01).Conclusion:Due to differences in applied stress, capitellar OCD lesions in baseball players were located more anteriorly compared with those seen in gymnasts. Therefore, although AP radiographs with the elbow in 45° of flexion are optimal for detecting OCD lesions in baseball players, radiographs with less elbow flexion or full extension are more useful in gymnasts, especially in early-stage OCD.
机译：背景：剥离性骨软骨炎（OCD）病变通常在年轻的棒球运动员和体操运动员的肱骨小头肌中观察到。通常认为，可以在前后（AP）射线照片上看到肘关节处于45°弯曲状态时的棒球运动员的小腹强迫症。但是，在棒球运动员和体操运动员中，受伤的机制似乎有所不同。反复弯曲的肘关节导致外翻超负荷被认为是棒球运动员中小腿强迫症的病因，而伸直肘部的负重可能是体操运动员强迫症的原因。目的：确定棒球之间小腿强迫症的位置差异运动员和体操运动员，并提出最佳的肘部AP射线照相角度，以可视化青少年体操运动员早期的OCD病变。研究设计：横断面研究;证据水平，方法三：方法：受试者由95名棒球运动员（95名肘部）和21名体操运动员（24名肘部）组成，平均年龄为13.7岁（范围11-18岁）。为了定位病变，使用肘部的矢状计算机断层扫描图像研究了肱骨头小头中患处相对于肱骨轴的倾斜度。倾斜角定义为肱骨的长轴与垂直于连接病变前缘和后缘的线的线之间的角度。结果：棒球运动员平均倾斜角度为57.6°±10.7°，体操运动员平均倾斜角度为28.0°±10.7°。与体操运动员相比，小人的OCD病变位于棒球运动员的前侧（P <.01）。结论：由于施加压力的差异，与体操运动员相比，棒球运动员的小脑OCD病变的位置较向前。因此，尽管肘部弯曲度为45°的AP射线照相最适合于检测棒球运动员的OCD病变，但肘部弯曲度或完全伸展度较低的射线照相在体操运动员中更有用，尤其是在早期强迫症中。

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