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Alpha angle and lateral center edge angle measurements for femoroacetabular impingement

Alpha angle and lateral center edge angle measurements for femoroacetabular impingement
Above is an anteroposterior radiograph of the pelvis illustrating measurement of the alpha angle (left hip) and lateral center edge (LCE) angle (right hip). These are used to assess FAI. For details about how the angles are determined, please refer to the UpToDate topic discussing FAI.
FAI: femoroacetabular impingement; LCE: lateral center edge.
Courtesy of Antony Palmer, MA, BMBCh, DPhil.
Graphic 126533 Version 2.0