When the foot is positioned facing directly forward, the femoral head may sublux (partially dislocate) from the socket of the hip joint, called the acetabulum. This torsional malalignment places ...

1 Department of Radiology, Ningbo No. 6 Hospital, Ningbo, Zhejiang, China 2 Department of Sports Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China ...