Inter- and intra-operator reliability in patient-specific template positioning for total hip arthroplasty

A cadaver study

verfasst von

Manuel Krämer, Lüder A. Kahrs, Karl Ingo Friese, Christian von Falck, Christof Hurschler

Abstract

Background: The implantation of the acetabular cup essentially determines the clinical outcome of total hip arthroplasty. To address this issue, the aim of this study was to build patient-specific instruments (PSIs) with various reference surfaces, followed by in vitro investigations to examine the inter- and intra-operator reliability as well as the overall precision of these patient-specific templates. Methods: Seven human hemi-pelvis specimens were used for this study. After a CT scan, PSIs with different imprint heights were created. The overall precision of the templates and the inter- and intra-operator reliabilities were calculated. Results: Strong differences in precision between the PSI designs could be observed. The desired orientation of the acetabular cup could be adjusted with a precision of up to 1.55°. Conclusion: Based on our results, we believe that the application of the PSI-based acetabular cup positioning in total hip arthroplasty procedures can potentially increase the precision of cup placement.

Organisationseinheit(en)

Institut für Mechatronische Systeme

Externe Organisation(en)

Medizinische Hochschule Hannover (MHH)

Typ

Artikel

Journal

International Journal of Medical Robotics and Computer Assisted Surgery

Band

14

ISSN

1478-5951

Publikationsdatum

05.03.2018

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Chirurgie, Biophysik, Angewandte Informatik

Elektronische Version(en)

https://doi.org/10.1002/rcs.1887 (Zugang: Geschlossen)