The Crossover Sign Overestimates Acetabular Retroversion
نویسندگان
چکیده
منابع مشابه
Diagnostic Value of Ischial Spine Sign in Patients with Acetabular Retroversion
Background: Acetabular Retroversion (AR) is a hip disorder and one of the causes of pain in this area. Evaluationof positive Cross Over Sign (COS) on AP X-Rays of the hip is currently the best method of diagnosis of AR. Severalstudies have measured co-existence of Ischial Spine Sign (ISS) in patients with AR. In this study we evaluated thediagnostic value of ISS in confirmation of AR and compar...
متن کاملRadiographic markers of acetabular retroversion: correlation of the cross-over sign, ischial spine sign and posterior wall sign.
Radiological diagnosis of acetabular retroversion is based on the presence of the cross-over sign (COS), the posterior wall sign (PWS), and prominence of the ischial spine (PRISS). The primary purpose of the study was to correlate the quantitative cross-over sign with the presence or absence of the PRISS and PWS signs. The hypothesis was that both, PRISS and PWS are associated with a higher cro...
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PURPOSE The triradiate cartilage transiently projects medially within the pelvic brim around the time of triradiate closure, mimicking the ischial spine sign. The purpose of this study was to characterize this newly identified radiographic sign using a longitudinal radiographic study. METHODS We identified 72 subjects from a longitudinal radiographic study of healthy adolescents, each with at...
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Excessive acetabular cover secondary to a retroverted acetabulum causes pincer impingement, which may cause early osteoarthritis of the hip. Our aim was to determine if there was a relationship between acetabular version and osteoarthritis of the hip. Using image processing and analysis software we studied 117 CT images of the hip in patients aged less than 65 years who had undergone a CT virtu...
متن کاملThree-dimensional CT analysis to determine acetabular retroversion and the implications for the management of femoro-acetabular impingement.
This study examined the relationship between the cross-over sign and the true three-dimensional anatomical version of the acetabulum. We also investigated whether in true retroversion there is excessive femoral head cover anteriorly. Radiographs of 64 hips in patients being investigated for symptoms of femoro-acetabular impingement were analysed and the presence of a cross-over sign was documen...
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ژورنال
عنوان ژورنال: Clinical Orthopaedics & Related Research
سال: 2013
ISSN: 0009-921X
DOI: 10.1007/s11999-012-2689-5