The prevalence of cam-type femoroacetabular deformity in asymptomatic adults
The prevalence of cam-type femoroacetabular deformity in asymptomatic adults
复制标题
DOI：
10.1302/0301-620x.93b10.26433
复制
发表时间：
2011-10-01
影响因子：
--
通讯作者：
Parvizi, J.
中科院分区：
文献类型：
--
作者：
Jung, K. A.;Restrepo, C.;Parvizi, J.
我们对2004年4月至2009年8月间随机选择的419例患者的骨盆前后位CT定位片进行了回顾性检查，以确定凸轮型股骨髋臼畸形在无症状人群中的患病率。CT扫描都是针对与髋关节疾病无关的疾病进行的。凸轮型股骨髋臼畸形的频率通过测量每个髋关节的前后位图像上的α角来评估。根据哥本哈根骨关节炎研究对α角进行分类。在215例男性髋关节（108例患者）中，平均α角为59.12度（37.75度至103.50度）。其中病理性髋关节30髋（13.95%），交界性髋关节32髋（14.88%），正常髋关节153髋（71.16%）。女性272例540髋，平均α角45.47 °（34.75 ° ~ 87.00 °），病理性30髋（5.56%），交界性33髋（6.11%），正常477髋（88.33%）。凸轮型股骨髋臼畸形在无症状人群中并不罕见。这些解剖学异常，如增加α角所确定的，男性的发生率似乎是女性的两倍。虽然骨关节炎和股骨髋臼撞击之间的关联被认为是存在的，需要一个长期的流行病学研究，以确定这些解剖异常的自然史。
We performed a retrospective examination of the anteroposterior pelvic CT scout views of 419 randomly selected patients between April 2004 and August 2009 in order to determine the prevalence of cam-type femoroacetabular deformity in the asymptomatic population. The CT scans had all been undertaken for conditions unrelated to disorders of the hip. The frequency of cam-type femoroacetabular deformity was assessed by measuring the alpha-angle of each hip on the anteroposterior images. The alpha-angles were classified according to the Copenhagen Osteoarthritis Study. Among 215 male hips (108 patients) the mean alpha-angle was 59.12 degrees (37.75 degrees to 103.50 degrees). Of these, a total of 30 hips (13.95%) were defined as pathological, 32 (14.88%) as borderline and 153 (71.16%) as normal. Among 540 female hips (272 patients) the mean alpha-angle was 45.47 degrees (34.75 degrees to 87.00 degrees), with 30 hips (5.56%) defined as pathological, 33 (6.11%) as borderline and 477 (88.33%) as normal. It appears that the cam-type femoroacetabular deformity is not rare among the asymptomatic population. These anatomical abnormalities, as determined by an increased alpha-angle, appear to be twice as frequent in men as in women. Although an association between osteoarthritis and femoroacetabular impingement is believed to exist, a long-term epidemiological study is needed to determine the natural history of these anatomical abnormalities.