Ischial Spine Sign Reveals Acetabular Retroversion in Legg-Calvé-Perthes Disease

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...

Osteochondritis dissecans following Legg-Calvé-Perthes' disease.

Editorial LEGG - CALVÉ - PERTHES DISEASE : 100 YEARS

Legg-Calvé-Perthes disease (LCPD) started to be studied 100 years ago (1910), thanks to the advent of the possibility of conducting clinical studies by means of radiographic images (1895). However, many questions remain open, both in relation to the etiology of this orthopedic condition and in relation to which therapeutic measures are valid. Thus, great controversy has been generated. In 1910,...

Legg-Calvé-Perthes disease: current concepts.

Perthes is a serious but self-limited disorder. If it is a self limiting disease, then why one should think of treating it. The aim of treatment is to prevent femoral head deformity and subsequent osteoarthrosis. There is still no clear guideline for the management of Perthes disease. This is because of the controversies in all most all the aspects of the disease; etiology, classification, natu...

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...