INTRODUCTION: @entity2249 jeopardizes the vital prognosis of the elderly subject and the functional prognosis of the young subject. The vascular consequence is important, with the risk of @entity2530 of the femoral head. In young @entity1 , predicting the risk of @entity39 at the acute stage seems warranted so as to optimize the choice of therapy. CT with injection could be useful to study the residual bone vascularity after an acute @entity174 of the femoral neck. HYPOTHESIS: The CT scan with injection can diagnose @entity63 of the femoral head after neck @entity174 by demonstrating hypoperfusion and thus estimating the risk for @entity2530 . @entity1 AND METHOD: A CT scan with injection was performed prospectively in 20 adult @entity1 who had given informed consent after verification of the inclusion and exclusion criteria. Ten presented @entity2249 and 10 a pertrochanteric @entity174 , the latter making up the control group. The second control group was the healthy side of @entity1 presenting a @entity2249 . The images were analyzed after delineating a region of interest as a volume at the center of the femoral head. The results were analyzed after modeling based on the physical principle of diffusion. RESULTS: No differences were found between the "healthy hip," " @entity173 ," " @entity2249 ," and "trochanteric region @entity174 " groups. The only statistically significant correlation was found between the " @entity173 " and "healthy hip" of the same @entity1 independently of the type of @entity174 . DISCUSSION: The results do not confirm the working hypothesis. This study was mainly limited by the small number of @entity1 included, but this did not substantially effect the study's conclusions. According to the results, it seems that this study provided a CT evaluation of bone mineral density. At the end of the study, it seems that CT with injection is not well adapted in assessing residual femoral head vascularity or estimating the risk of progression towards @entity2530 . According to the literature, only dynamic MRI with injection seems to be effective in this assessment and estimation. LEVEL OF EVIDENCE: Level III prospective comparative diagnostic.

Can injection CT scan assess the residual femoral head vascularity after XXXX ?

@entity1 :: ('9606', 'Species') :: ['patients', 'patient', 'PATIENTS'] @entity2249 :: ('MESH:D005265', 'Disease') :: ['Femoral neck fracture', 'femoral neck fracture'] @entity174 :: ('MESH:D050723', 'Disease') :: ['fracture'] @entity39 :: ('MESH:D009336', 'Disease') :: ['necrosis'] @entity63 :: ('MESH:D007511', 'Disease') :: ['ischemia'] @entity173 :: ('MESH:D006620', 'Disease') :: ['fractured hip'] @entity2530 :: ('MESH:D010020', 'Disease') :: ['avascular necrosis', 'osteonecrosis']
@entity174 :: (MESH:D050723,Disease) :: ['acute neck fracture']
