Accuracy of navigated cam resection in femoroacetabular impingement: A randomised controlled trial.
BACKGROUND
The main cause for revision hip arthroscopy surgery is incomplete bony resection of femoroacetabular impingement (FAI). This study aimed to compare the cam resection accuracy via the conventional hip arthroscopy technique with the navigation technique.


METHODS
Two prospectively randomized groups were recruited: navigated (n = 15) and conventional (n = 14). A pre-operative CT and post-operative MRI scan were obtained in all cases to compare alpha angle, range of motion simulation and determine a pre-operative 3D surgical resection plan.


RESULTS
Post-operatively, the mean maximal alpha angle improved significantly in the navigated group compared with the conventional group (55°vs.66°; P = 0.023), especially in the 12 o' clock position (45°vs.60°; P = 0.041). However, positioning time and radiation exposure were significantly longer in the navigated group.


CONCLUSION
Navigated surgery is effective for patients with cam type FAI in helping restore normal anatomy, however, not without drawbacks. Larger studies will be required to validate our results.
['Van Houcke|Jan|J|http://orcid.org/0000-0002-9738-7760', 'Khanduja|Vikas|V|', 'Nakano|Naoki|N|', 'Krekel|Peter|P|', 'Pattyn|Christophe|C|', 'Audenaert|Emmanuel|E|']
D000293:Adolescent D000328:Adult D001182:Arthroscopy D001842:Bone and Bones D004867:Equipment Design D057925:Femoracetabular Impingement D006621:Hip Joint D006801:Humans D021621:Imaging, Three-Dimensional D008279:Magnetic Resonance Imaging D008297:Male D011446:Prospective Studies D016059:Range of Motion, Articular D015203:Reproducibility of Results D065287:Robotic Surgical Procedures D014057:Tomography, X-Ray Computed D055815:Young Adult
navigation femoroacetabular impingement hip arthroscopy