Anteroposterior pelvic radiographs to assess acetabular retroversion: High validity of the “cross-over-sign”
نویسندگان
چکیده
منابع مشابه
Radiographic 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...
متن کاملDiagnostic 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 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...
متن کاملCranial acetabular retroversion is common in developmental dysplasia of the hip as assessed by the weight bearing position
BACKGROUND AND PURPOSE The appearance of acetabular version differs between the supine and weight bearing positions in developmental dysplasia of the hip. Weight bearing radiographic evaluation has been recommended to ensure the best coherence between symptoms, functional appearance, and hip deformities. Previous prevalence estimates of acetabular retroversion in dysplastic hips have been estab...
متن کاملPlanar anteversion of the acetabular cup as determined from plain anteroposterior radiographs.
In total hip replacement, orientation of the cup is critical to the stability of the prosthesis. A new method to determine the angle of planar anteversion is described. A simple mathematical formula uses the measurements taken from anteroposterior radiographs to calculate the planar anteversion without reference to tables or charts. An experimental study in vitro has shown the efficacy of the f...
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ژورنال
عنوان ژورنال: Journal of Orthopaedic Research
سال: 2007
ISSN: 0736-0266,1554-527X
DOI: 10.1002/jor.20380