Department of Orthopedics and Traumatology, Center of Sports Traumatology (CETE), Federal University of São Paulo, São Paulo, Brazil.
University of Pittsburgh Medical Center, Center for Sports Medicine, Pittsburgh, Pennsylvania.
Sports Health. 2021 Jul-Aug;13(4):341-346. doi: 10.1177/1941738120973662. Epub 2021 Feb 4.
Morphological changes characteristic of femoroacetabular impingement (FAI) are common in soccer players. However, the clinical relevance of such anatomical variations is still not well-defined.
We hypothesized that high alpha angle values and/or acetabular retroversion index (ARI) are correlated with rotational range of motion (ROM) of the hip and that there are clinical-radiological diferences between the dominant lower limb (DLL) and nondominant lower limb (NDLL) in professional soccer players.
Cross-sectional.
Level 3.
A total of 59 male professional soccer players (average age 25.5 years, range 18-38 years) were evaluated in the preseason. As main outcome measures, we evaluated the alpha angle and the ARI and hip IR and ER ROM with radiographic analysis.
The measurements taken on DLL and NDLL were compared and a significant difference was found between the sides in the ER ( = 0.027), where the DLL measures were 1.54° (95% CI, 0.18-2.89) greater than the NDLL. There were no significant differences between the sides in the measures of IR ( > 0.99), total ROM ( = 0.07), alpha angle ( = 0.250), and ARI ( = 0.079). The correlations between the rotation measurements and the alpha angle in each limb were evaluated and the coefficient values showed no correlation; so also between the ARI and rotation measures.
Morphological changes of the femur or acetabulum are not correlated with hip IR and ER ROM in male professional soccer players. ER on the dominant side was greater than on the nondominant side. There was no significant difference in the other measurements between sides.
In clinical practice, it is common to attribute loss of hip rotational movement to the presence of FAI. This study shows that anatomical FAI may not have a very strong influence on available hip rotational movement in professional soccer athletes.
股骨髋臼撞击症（FAI）的特征性形态改变在足球运动员中较为常见。然而，此类解剖变异与临床的相关性仍未明确。
我们假设高 alpha 角值和/或髋臼后倾指数（ARI）与髋关节旋转活动范围（ROM）相关，并且在职业足球运动员中，优势下肢（DLL）和非优势下肢（NDLL）之间存在临床影像学差异。
横断面研究。
3 级。
在赛季前，共评估了 59 名男性职业足球运动员（平均年龄 25.5 岁，范围 18-38 岁）。作为主要观察指标，我们通过影像学分析评估了 alpha 角和 ARI，以及髋关节内收和外展 ROM。
比较了 DLL 和 NDLL 的测量值，发现外展测量值（ = 0.027）存在显著的侧间差异，DLL 的测量值比 NDLL 大 1.54°（95%可信区间，0.18-2.89）。在内收测量值（ > 0.99）、总 ROM（ = 0.07）、alpha 角（ = 0.250）和 ARI（ = 0.079）方面，两侧之间没有显著差异。评估了每个肢体的旋转测量值与 alpha 角之间的相关性，发现系数值没有相关性；ARI 与旋转测量值之间也没有相关性。
在男性职业足球运动员中，股骨或髋臼的形态变化与髋关节内收和外展 ROM 不相关。优势侧的外展 ROM 大于非优势侧。两侧之间的其他测量值无显著差异。
在临床实践中，髋关节旋转运动的丧失常归因于 FAI 的存在。本研究表明，解剖学上的 FAI 可能对职业足球运动员髋关节的可旋转运动没有很强的影响。
