Editorial Commentary: Both Femoral Acetabular Anteversion and Retroversion May Contribute to the Effect of Femoroacetabular Impingement: What’s Your Version?

Femoral anteversion may be a protective factor for hip impingement, whereas hip arthroscopy outcomes are worse for patients with femoral retroversion. Changes in version also affect the location of impingement. The association of increased anteversion with cam lesions may also explain the high number of patients with asymptomatic cam lesions. Thus, some patients may have large α angles but be asymptomatic. Finally, although femoral version is important, it must be considered in the setting of the patient's acetabular morphology. There is a complex interplay of femoral and acetabular morphologies.