Less Iatrogenic Soft Tissue Damage Utilizing Robotic Assisted Total Knee Arthroplasty when Compared with a Manual Approach: A Blinded Assessment

4 pages•Published: October 26, 2019

Emily Hampp, Nipun Sodhi, Laura Scholl, Matthew Deren, Zachary Yenna, Geoffrey Westrich and Michael Mont

Abstract

While manual total knee arthroplasty (MTKA) has demonstrated excellent clinical results, occasionally intraoperative damage to soft tissues can occur. Robotic-arm assisted technology is designed to constrain a sawblade in a haptic zone to help ensure that only the desired bone cuts are made. The objective of this cadaver study was to quantify the extent of soft tissue damage sustained during TKA through a robotic-arm assisted (RATKA) haptically guided approach and conventional MTKA approach. Four surgeons each prepared 3 RATKA and 3 MTKA specimens for cruciate retaining TKAs. RATKA was performed on one knee, with MTKA on the other. Postoperatively, 2 additional blinded surgeons, assessed and graded damage to 14 key anatomic structures. A Kruskal-Wallis hypothesis test was performed to assess for statistical differences of soft tissue damages between RATKA and MTKA cases. A p-value <0.05 was used as the threshold for statistical significance, and p-values were adjusted for ties. Significantly less damage occurred to the PCL in the RATKA than the MTKA specimens (p<0.0001). RATKA specimens had less damage to the dMCL (p=.149), ITB (p=0.580), popliteus (p=0.248), and patellar ligament (p=0.317). The results of this study indicate that RATKA may result in less soft-tissue damage than MTKA, especially to the PCL.

Keyphrases: bony preservation, robotic arm assisted tka, soft tissue damage, tka

In: Patrick Meere and Ferdinando Rodriguez Y Baena (editors). CAOS 2019. The 19th Annual Meeting of the International Society for Computer Assisted Orthopaedic Surgery, vol 3, pages 169-172.

Links:	https://easychair.org/publications/paper/3wDm
	https://doi.org/10.29007/v7g9

BibTeX entry

@inproceedings{CAOS2019:Less_Iatrogenic_Soft_Tissue,
  author    = {Emily Hampp and Nipun Sodhi and Laura Scholl and Matthew Deren and Zachary Yenna and Geoffrey Westrich and Michael Mont},
  title     = {Less Iatrogenic Soft Tissue Damage Utilizing Robotic Assisted Total Knee Arthroplasty when Compared with a Manual Approach: A Blinded Assessment},
  booktitle = {CAOS 2019. The 19th Annual Meeting of the International Society for Computer Assisted Orthopaedic Surgery},
  editor    = {Patrick Meere and Ferdinando Rodriguez Y Baena},
  series    = {EPiC Series in Health Sciences},
  volume    = {3},
  publisher = {EasyChair},
  bibsource = {EasyChair, https://easychair.org},
  issn      = {2398-5305},
  url       = {/publications/paper/3wDm},
  doi       = {10.29007/v7g9},
  pages     = {169-172},
  year      = {2019}}

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