James V. Bono, MD; Sumon Nandi, MD; Mehran Aghazadeh, MD; Alexander Van der Ven, MD; Jeffrey Peretz, MD; and Geoffrey VanFlandern, MD
A Low-Cost Digital Templating System for Total Hip Arthroplasty
$25.00
Acetate templating for total hip arthroplasty (THA) is cumbersome and inaccurate. High cost hampers mainstream use of digital templating despite ease of use and accuracy. The aim of this study was to validate a low-cost digital THA templating system. Low-cost digital templating software was created using C# programming language. On the basis of power calculations, three surgeons templated 20 consecutive anteroposterior pelvis X-rays using this software against an industry standard. Intraclass
correlation coefficient for both systems was approximately .90 for component size and femoral neck cut position. Bland–Altman plots demonstrated that both systems predicted actual implant size with similar accuracy. Interrater reliability was not significantly different between the two systems. This low-cost digital THA templating system is up to 12-fold lower in cost than currently available software with similar accuracy. (Journal of Surgical Orthopaedic Advances 24(1):42–46, 2015) Key words: digital templating system, templating, total hip arthroplasty