Fig. 2
a Retroversion of the bilateral acetabulum is indicated by a positive crossover sign and a positive ischial spine sign. b The α angle on the left is 40°
Fig. 2 | Journal of Medical Case Reports
a Retroversion of the bilateral acetabulum is indicated by a positive crossover sign and a positive ischial spine sign. b The α angle on the left is 40°
Journal of Medical Case Reports