Skip to main content
. 2020 Dec 15;5(4):e20.00107. doi: 10.2106/JBJS.OA.20.00107

Fig. 2.

Fig. 2

Anteroposterior view of a postoperative radiograph of a right hip. The coordinate system of the RSA examination is presented with the definition of translations along and rotations around the x, y, and z axes. Proximal cup migration was defined as proximal translation along the y axis. Radiographs were examined for radiolucencies in each Charnley-DeLee zone (I-III).