Radiographic prevalence of femoroacetabular impingement in collegiate football players: AAOS Exhibit Selection.
Radiographic prevalence of femoroacetabular impingement in collegiate football players: AAOS Exhibit Selection.
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DOI：
10.2106/jbjs.k.00544
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发表时间：
2011-10-05
期刊：
影响因子：
--
通讯作者：
Peters, Christopher L
中科院分区：
文献类型：
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作者：
Kapron, Ashley L;Anderson, Andrew E;Peters, Christopher L
背景技术背景：运动员中股骨髋臼撞击的发生率可能高于普通人群，因为运动期间髋关节负荷增加。本研究评估了大学足球运动员的X线片，以量化无症状运动员股骨髋臼撞击的患病率。方法：67名男性大学足球运动员（年龄21 ± 1.9岁）参加了这项前瞻性研究。两个髋关节（n = 134）由两名骨科医生独立评价股骨髋臼撞击的影像学体征。在蛙腿侧位X线片上测量α角和股骨头-颈偏心距。在前后位X线片上测量外侧中心边缘角、髋臼指数、交叉征和α角。在评估患病率之前，观察员之间对连续变量的数据进行平均。如果任一X线片上的股骨头-颈偏心距为8 mm和/或α角为50°，则认为存在凸轮股骨髋臼撞击。钳femorocabulary撞击被认为是存在的，如果外侧中心边缘角为40°，髋臼指数为0°，和/或一个积极的交叉迹象被检测到both observers.Results：百分之九十五的134髋关节至少有一个凸轮或钳撞击的迹象，77%有一个以上的迹象。21%的患者只有一个凸轮股骨髋臼撞击的迹象，57%的患者有两个迹象。52%的患者只有一个钳形股骨髋臼撞击征象，10%有两个，4%有三个征象。具体而言，72%的患者α角异常，64%的患者股骨头-颈偏心距减小，61%的患者交叉征阳性，16%的患者髋臼指数减小，7%的患者外侧中心-边缘角增大。50%的髋关节至少有一个钳形股骨髋臼撞击的迹象和至少一个凸轮撞击的迹象。观察者间和观察者内的重复性是中等或更好的每一个措施（范围，0.59至0.85）。结论：形态异常与凸轮和钳股骨髋臼撞击是常见的，在这些大学的足球运动员。凸轮和钳形股骨髋臼撞击的患病率明显高于以前报道的一般人群的患病率。
BACKGROUND: The prevalence of femoroacetabular impingement may be greater in athletes than in the general population because of increased loading of the hip during sports. This study evaluated the radiographs of collegiate football players in order to quantify the prevalence of femoroacetabular impingement in asymptomatic athletes.METHODS: Sixty-seven male collegiate football players (age, 21 ± 1.9 years) participated in this prospective study. Both hips (n = 134) were evaluated independently by two orthopaedic surgeons for radiographic signs of femoroacetabular impingement. The alpha angle and femoral head-neck offset were measured on frog-leg lateral radiographs. The lateral center-edge angle, acetabular index, crossover sign, and alpha angle were measured on anteroposterior radiographs. Data for continuous variables were averaged between observers prior to assessing prevalence. Cam femoroacetabular impingement was considered to be present if the femoral head-neck offset was <8 mm and/or the alpha angle was >50° on either radiograph. Pincer femoroacetabular impingement was considered to be present if the lateral center-edge angle was >40°, the acetabular index was <0°, and/or a positive crossover sign was detected by both observers.RESULTS: Ninety-five percent of the 134 hips had at least one sign of cam or pincer impingement, and 77% had more than one sign. Twenty-one percent had only one sign of cam femoroacetabular impingement and 57% had both signs. Fifty-two percent had only one sign of pincer femoroacetabular impingement, 10% had two, and 4% had all three signs. Specifically, 72% had an abnormal alpha angle, 64% had a decreased femoral head-neck offset, 61% had a positive crossover sign, 16% had a decreased acetabular index, and 7% had an increased lateral center-edge angle. Fifty percent of all hips had at least one sign of pincer femoroacetabular impingement and at least one sign of cam impingement. Interobserver and intraobserver repeatability was moderate or better for each measure (range, 0.59 to 0.85).CONCLUSIONS: Morphologic abnormalities associated with cam and pincer femoroacetabular impingement were common in these collegiate football players. The prevalence of cam and pincer femoroacetabular impingement was substantially higher than the previously reported prevalence in the general population.