Computer-assisted femoral head-neck osteochondroplasty using a surgical milling device an in vitro accuracy study

• Published in: The Journal of arthroplasty 2012-02, Vol.27 (2), p.310-316
• Main Authors: Ecker, Timo M, Puls, Marc, Steppacher, Simon D, Bastian, Johannes D, Keel, Marius J B, Siebenrock, Klaus A, Tannast, Moritz
• Format: Article
• Language: English
• Subjects: Arthroscopy - instrumentation; Arthroscopy - methods; Cadaver; Feasibility Studies; Femoracetabular Impingement - surgery; Femur Head - surgery; Femur Neck - surgery; Hip Joint - surgery; Humans; In Vitro Techniques; Models, Anatomic; Models, Biological; Observer Variation; Orthopedic Procedures - instrumentation; Orthopedic Procedures - methods; Range of Motion, Articular; Software; Surgery, Computer-Assisted - instrumentation; Surgery, Computer-Assisted - methods
• ISSN: 1532-8406
• DOI: 10.1016/j.arth.2011.03.048

Surgical navigation might increase the safety of osteochondroplasty procedures in patients with femoroacetabular impingement. Feasibility and accuracy of navigation of a surgical reaming device were assessed. Three-dimensional models of 18 identical sawbone femora and 5 cadaver hips were created. Custom software was used to plan and perform repeated computer-assisted osteochondroplasty procedures using a navigated burr. Postoperative 3-dimensional models were created and compared with the preoperative models. A Bland-Altmann analysis assessing α angle and offset ratio accuracy showed even distribution along the zero line with narrow confidence intervals. No differences in α angle and offset ratio accuracy (P = 0.486 and P = 0.2) were detected between both observers. Planning and conduction of navigated osteochondroplasty using a surgical reaming device is feasible and accurate.