Advanced CasePlan Clinical Research
The Accuracy of Digital Templating in Primary Total Hip Arthroplasty
Authors: Stephen R. Kantor, MD and Ivan M. Tomek, MD
Department of Orthopaedic Surgery
Dartmouth-Hitchcock Medical Center and Dartmouth Medical School
Lebanon, NH, USA
Purpose: The purpose of this study was to assess the ability of digital templating software to accurately predict implant size requirements for primary total hip arthroplasty.
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Methods:
- 135* consecutive primary total hip arthroplasties were templated preoperatively using the Advanced CasePlan ™ templating software (Stryker Imaging, Flower Mound).
- Hips were templated using magnification-calibrated radiographs. For each hip, an AP pelvis, AP and false profile projection were used for the preoperative assessment.
- All acetabuli implanted were either Trilogy Trabecular Metal (Zimmer), Trident PSL (Stryker), or Pinnacle (DePuy) implants.
- Femoral stems were either Alloclassic or ML-Taper (Zimmer), Accolade or Exeter (Stryker), or Corail (DePuy).
- All hips were implanted by a single surgeon using either a MIS posterior or modified MIS Watson-Jones approach.
- Postoperatively, the predicted implant size was compared to the actual components selected at the time of surgery.
Accuracy of Digital (Filmless) Templating in Total Hip Replacement
Article Type: Clinical
Authors: William Murzic, MD; Priya Hirway, MS; Paula Lowe , RN; Zeev Glozman
Abstract: Preoperative templating has been useful to determine the correct size prosthesis in cementless total hip replacement. Typically this has been accomplished using acetate overlays on plain radiographs with good success. With the advent of digital x-ray and PACS, software has been developed that incorporates the templates of many different vendors into a program that enables the surgeon to measure the size of the intended femoral and acetabular components—without using radiographs. We compared the two techniques to assess the relative accuracy of digital templating.
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