Intra-Operative and Anatomic Verification of a TKA Computational Model for Pre-Operative Surgical Planning

4 pages•Published: October 26, 2019

Joshua Twiggs, Edgar Wakelin, Justin Roe, Brett Fritsch and Brad Miles

Abstract

A promising measure of dynamic outcomes in Total Knee Arthroplasty (TKA) is the simulation of joint dynamics. These simulations are potentially useful for pre-operative planning, but are not yet validated for patient-specific variations in anatomy, which forms the aim of this paper. 284 patients from a database of total knee arthroplasty patients were analysed using a pre-operatively defined simulation predicting post-operative knee dynamics; each patient had previously undergone pre- and post-operative CT imaging and had been assessed using the Knee Injury and Osteoarthritis Outcome (KOOS) score at 6 months following surgery. A significant correlation was found between the simulated contact force and laxity in mid-flexion (r=-0.452, p<0.0001), and between the medio- lateral difference in contact force and difference in distal-vs-posterior femoral collateral ligament offset (r=-0.473, p<0.0001). A significant difference of 5 KOOS pain points (p=0.02) was found for patients with unusually low or high simulated contact force compared to normal. These results indicate the preoperative simulation is capable of distinguishing patient-specific kinematics prior to surgery, thereby demonstrating the utility of this simulation for making pre-surgical predictions of patient-specific kinematics and patient-reported outcomes.

Keyphrases: arthroplasty, knee, outcome, simulation, verification

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 380-383.

Links:	https://easychair.org/publications/paper/PR1p
	https://doi.org/10.29007/hvqg

BibTeX entry

@inproceedings{CAOS2019:Intra_Operative_Anatomic_Verification,
  author    = {Joshua Twiggs and Edgar Wakelin and Justin Roe and Brett Fritsch and Brad Miles},
  title     = {Intra-Operative and Anatomic Verification of a TKA Computational Model for Pre-Operative Surgical Planning},
  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/PR1p},
  doi       = {10.29007/hvqg},
  pages     = {380-383},
  year      = {2019}}

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