Influence of patient-specific target ROM definition on the combined target zone for cup alignment in THA

5 pages•Published: December 17, 2024

Luisa Berger, Andreas Stapf, Lorenz Schmidt-Bleek, Kunihiko Tokunaga, Philipp Damm and Klaus Radermacher

Abstract

Definition of target zones for prosthesis alignment is a common method in preoperative planning for THA. Several criteria for calculation of these target zones are discussed in literature and a combined target zone (CTZ) has been defined on the basis of morphological and morphofunctional parameters. Especially the definition of a patient-specific target ROM is important for prediction of postoperative prosthesis ́ functionality. Prosthetic impingement can limit movements und thus restrict patients in their activities of daily living. A precise analysis of the postoperative target ROM can help to provide prosthetic impingement during movements, which are essential for the individual patient and also improve the size of the resulting CTZ for prosthesis alignment. We analyzed four different ROM definitions and their impact on the size of the ROM based target zone (ROMTZ) as part of the CTZ on a database of 200 patients. We found significant differences between the sizes of the resulting ROMTZs. Hence, our study underlines the effectiveness of a differentiated evaluation of the individual target ROM for optimized preoperative planning in THA.

Keyphrases: biomechanics, endoprothetis, hip

In: Joshua W Giles and Aziliz Guezou-Philippe (editors). Proceedings of The 24th Annual Meeting of the International Society for Computer Assisted Orthopaedic Surgery, vol 7, pages 20-24.

Links:	https://easychair.org/publications/paper/JtF6
	https://doi.org/10.29007/tc34

BibTeX entry

@inproceedings{CAOS2024:Influence_patient_specific_target,
  author    = {Luisa Berger and Andreas Stapf and Lorenz Schmidt-Bleek and Kunihiko Tokunaga and Philipp Damm and Klaus Radermacher},
  title     = {Influence of patient-specific target ROM definition on the combined target zone for cup alignment in THA},
  booktitle = {Proceedings of The 24th Annual Meeting of the International Society for Computer Assisted Orthopaedic Surgery},
  editor    = {Joshua W Giles and Aziliz Guezou-Philippe},
  series    = {EPiC Series in Health Sciences},
  volume    = {7},
  publisher = {EasyChair},
  bibsource = {EasyChair, https://easychair.org},
  issn      = {2398-5305},
  url       = {/publications/paper/JtF6},
  doi       = {10.29007/tc34},
  pages     = {20-24},
  year      = {2024}}

Download PDF Open PDF in browser