Resection Accuracy Affects Stemless Shoulder Implant Stability

5 pages•Published: January 5, 2026

Ingmar Fleps, Kyle Snethen, Charlie Parduhn, Alex Miranda, Christine Mueri, Ghislain Maquer, Chloé Landry, Thomas Duquin, John Sperling, Taku Hatta, Jeff Bischoff and Philippe Favre

Abstract

Stemless TSA requires sufficient bone density to ensure appropriate implant stability, both of which can be impacted by surgical precision. While bone density surrounding a stemless humeral implant and implant size are the strongest predictors of implant stability, this study shows that implant positioning also impacts bone density and, hence, stability. The increased precision offered by robotic surgery relative to conventional surgery is shown here to reduce the variability in bone density around the implant, and may therefore improve the primary stability of stemless TSA.

Keyphrases: bone quality, implant stability, robotic surgery, stemless implant, surgical planning, total shoulder arthroplasty

In: Joshua William Giles and Aziliz Guezou-Philippe (editors). Proceedings of The 25th Annual Meeting of the International Society for Computer Assisted Orthopaedic Surgery, vol 8, pages 89-93.

Links:	https://easychair.org/publications/paper/FtkrL
	https://doi.org/10.29007/2b28

BibTeX entry

@inproceedings{CAOS2025:Resection_Accuracy_Affects_Stemless,
  author    = {Ingmar Fleps and Kyle Snethen and Charlie Parduhn and Alex Miranda and Christine Mueri and Ghislain Maquer and Chloé Landry and Thomas Duquin and John Sperling and Taku Hatta and Jeff Bischoff and Philippe Favre},
  title     = {Resection Accuracy Affects Stemless Shoulder Implant Stability},
  booktitle = {Proceedings of The 25th Annual Meeting of the International Society for Computer Assisted Orthopaedic Surgery},
  editor    = {Joshua William Giles and Aziliz Guezou-Philippe},
  series    = {EPiC Series in Health Sciences},
  volume    = {8},
  publisher = {EasyChair},
  bibsource = {EasyChair, https://easychair.org},
  issn      = {2398-5305},
  url       = {/publications/paper/FtkrL},
  doi       = {10.29007/2b28},
  pages     = {89-93},
  year      = {2026}}

Download PDF Open PDF in browser