Treffer: Imageless optical navigation system is clinically valid for total knee arthroplasty.

Title:
Imageless optical navigation system is clinically valid for total knee arthroplasty.
Authors:
Winberg TB; Intellijoint Surgical, Kitchener, ON, Canada., Wang S; Intellijoint Surgical, Kitchener, ON, Canada., Howard JL; Orthopaedic Surgery Program, London Health Sciences Centre, London, ON, Canada.
Source:
Computer assisted surgery (Abingdon, England) [Comput Assist Surg (Abingdon)] 2025 Dec; Vol. 30 (1), pp. 2466424. Date of Electronic Publication: 2025 Feb 16.
Publication Type:
Journal Article
Language:
English
Journal Info:
Publisher: Taylor & Francis Country of Publication: England NLM ID: 101681550 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 2469-9322 (Electronic) Linking ISSN: 24699322 NLM ISO Abbreviation: Comput Assist Surg (Abingdon) Subsets: MEDLINE
Imprint Name(s):
Original Publication: Abingdon, Oxon, UK : Taylor & Francis, [2016]-
MeSH Terms:
Arthroplasty, Replacement, Knee*/methods , Arthroplasty, Replacement, Knee*/instrumentation , Surgery, Computer-Assisted*/methods , Surgery, Computer-Assisted*/instrumentation , Surgical Navigation Systems*, Humans ; Female ; Male ; Retrospective Studies ; Aged ; Middle Aged ; Aged, 80 and over ; Tibia/surgery ; Tibia/diagnostic imaging ; Osteoarthritis, Knee/surgery ; Femur/surgery ; Femur/diagnostic imaging
Contributed Indexing:
Keywords: Total knee arthroplasty; accuracy; computer-assisted navigation; valgus; varus
Entry Date(s):
Date Created: 20250217 Date Completed: 20250507 Latest Revision: 20250704
Update Code:
20250705
DOI:
10.1080/24699322.2025.2466424
PMID:
39957139
Database:
MEDLINE

Weitere Informationen

Achieving optimal implant position and orientation during total knee arthroplasty (TKA) is a pivotal factor in long-term survival. Computer-assisted navigation (CAN) has been recognized as a trusted technology that improves the accuracy and consistency of femoral and tibial bone cuts. Imageless CAN offers advantages over image-based CAN by reducing cost, radiation exposure, and time. The purpose of this study was to evaluate the accuracy of an imageless optical navigation system for TKA in a clinical setting. Forty-two consecutive patients who underwent primary TKA with CAN were retrospectively reviewed. Femoral and tibial component coronal alignment was assessed via post-operative radiographs by two independent reviewers and compared against coronal alignment angles from the CAN. The primary outcome was the mean absolute difference of femoral and tibial varus/valgus angles between radiograph and intra-operative device measurements. Bland-Altman plots were used to assess agreement between the methods and statistically analyze potential systematic bias. The mean absolute differences between navigation-guided cut measurements and post-operative radiographs were 1.16 ± 1.03° and 1.76 ± 1.38° for femoral and tibial alignment respectively. About 88% of coronal measurements were within ±3°, while 99% were within ±5°. Bland-Altman analysis demonstrated a bias between CAN and radiographic measurements with CAN values averaging 0.52° (95% CI: 0.11°-0.93°) less than their paired radiographic measurements. This study demonstrated the ability of an optical imageless navigation system to measure, on average, femoral and tibial coronal cuts to within 2.0° of post-operative radiographic measurements in a clinical setting.