Fluoroscopically-guided navigation using ‘cross-matching’ of online fluoroscopy and preoperative computed tomography data. Reprinted from Journal of Arthroscopy, 25(4), Brunner A, Horisberger M, Herzog RF, Evaluation of a Computed Tomography-Based Navigation System Prototype for Hip Arthroscopy in the Treatment of Femoroacetabular Cam Impingement, 382-391, 2009 with permission from Elsevier.