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Accuracy of navigated cam resection in femoroacetabular impingement : a randomised controlled trial

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Abstract
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 degrees vs. 66 degrees; P = 0.023), especially in the 12 o' clock position (45 degrees vs. 60 degrees; 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.
Keywords
femoroacetabular impingement, hip arthroscopy, navigation, REVISION HIP ARTHROSCOPY, SURGERY, DEFORMITIES, DIAGNOSIS, VALIDITY, ALPHA, CT

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Chicago
Van Houcke, Jan, Vikas Khanduja, Naoki Nakano, Peter Krekel, Christophe Pattyn, and Emmanuel Audenaert. 2017. “Accuracy of Navigated Cam Resection in Femoroacetabular Impingement : a Randomised Controlled Trial.” International Journal of Medical Robotics and Computer Assisted Surgery 13 (4).
APA
Van Houcke, J., Khanduja, V., Nakano, N., Krekel, P., Pattyn, C., & Audenaert, E. (2017). Accuracy of navigated cam resection in femoroacetabular impingement : a randomised controlled trial. INTERNATIONAL JOURNAL OF MEDICAL ROBOTICS AND COMPUTER ASSISTED SURGERY, 13(4).
Vancouver
1.
Van Houcke J, Khanduja V, Nakano N, Krekel P, Pattyn C, Audenaert E. Accuracy of navigated cam resection in femoroacetabular impingement : a randomised controlled trial. INTERNATIONAL JOURNAL OF MEDICAL ROBOTICS AND COMPUTER ASSISTED SURGERY. 2017;13(4).
MLA
Van Houcke, Jan, Vikas Khanduja, Naoki Nakano, et al. “Accuracy of Navigated Cam Resection in Femoroacetabular Impingement : a Randomised Controlled Trial.” INTERNATIONAL JOURNAL OF MEDICAL ROBOTICS AND COMPUTER ASSISTED SURGERY 13.4 (2017): n. pag. Print.
@article{8524620,
  abstract     = {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 degrees vs. 66 degrees; P = 0.023), especially in the 12 o' clock position (45 degrees vs. 60 degrees; 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.},
  articleno    = {e1839},
  author       = {Van Houcke, Jan and Khanduja, Vikas and Nakano, Naoki and Krekel, Peter and Pattyn, Christophe and Audenaert, Emmanuel},
  issn         = {1478-5951},
  journal      = {INTERNATIONAL JOURNAL OF MEDICAL ROBOTICS AND COMPUTER ASSISTED SURGERY},
  keyword      = {femoroacetabular impingement,hip arthroscopy,navigation,REVISION HIP ARTHROSCOPY,SURGERY,DEFORMITIES,DIAGNOSIS,VALIDITY,ALPHA,CT},
  language     = {eng},
  number       = {4},
  pages        = {7},
  title        = {Accuracy of navigated cam resection in femoroacetabular impingement : a randomised controlled trial},
  url          = {http://dx.doi.org/10.1002/rcs.1839},
  volume       = {13},
  year         = {2017},
}

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