Summary: This study verified the intra- and inter-operator reliability of an extramedullary (EM) accelerometer-based smart cutting-guide for distal femoral resection during primary total knee arthroplasty (TKA)

Purpose

To verify the intra- and inter-operator reliability of an extramedullary (EM) accelerometer-based smart cutting-guide for distal femoral resection during primary total knee arthroplasty (TKA).
The hypothesis was a good correlation between operators and a difference < 1°, indicating a good reliability of the device.

Methods

25 not consecutive patients with knee osteoarthritis undergone to primary TKA using an EM inertial-based cutting guide to perform distal femoral resection.
In order to assess the agreement in femoral axis definition of the device, two operators performed three time each the maneuvers necessary to define axis. Inter rater agreement was evaluated with Bland & Altman agreement test.
Intra rater repeatability was evaluated analysing average results distribution of repeated measurements. Accuracy of the device was evaluated comparing differences between intra operative device data with final implant alignment measured on post-operative longstanding x-rays using Students’ t test.

Results

Agreement between the two operators was statistically significant (p<0.05) with a Bias of -0.4°(95%CI -0.6° to -0.2°). Average difference between cut orientation measured with device and final implant position, measured on x-rays was 0.2° (95%CI -1.5° to 1.7°) with no statistical difference between the two measurements. Final implant alignment, measured on x-ray was 90.2°, with 95% of cases distributed within range 88.0° to 92.0° for varus-valgus and 2.8°, with 95% of cases distributed within range 2.0° to 4.0° for flexion-extension.

Conclusions

The inertial-based EM cutting guide used to perform distal femoral resection during primary TKA demonstrated a good intra- and inter-operator reliability in the present in-vivo study.

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Use of Tibial Stem for Patients with Morbid Obesity in Total Knee Arthroplasty ePoster Presentation José Eduardo Flores Naranjo, MD, MEXICO Adrian Aziz Cortes De La Fuente, MD, MEXICO Octavio Martinez Montiel, MD, MEXICO Fernando Martinez Zuñiga, MD, MEXICO
The Functional Outcome of Zimmer Biomet’s Nexgen Total Knee Arthroplasty as Compared with Healthy Older Adults ePoster Presentation Gwenllian F. Tawy, PhD, MRes, BSc(Hons), UNITED KINGDOM Michael J. McNicholas, BSc, MD, FRCS Tr & Orth, UNITED KINGDOM Leela C. Biant, MS, MFSTEd, FRCSEd(Tr&Orth), UNITED KINGDOM
Follow-Up after Primary Total Knee Arthroplasty with the Sigma PFC implant (DePuy Synthes Inc.) in Patients with Metal Allergy or Hypersensitivity ePoster Presentation Natalie Mengis, MD, SWITZERLAND Jules-Nikolaus Rippke, Dr. med. (MD), SWITZERLAND Sebastian Schmidt, GERMANY Tudor Daniel Cucos, MD, GERMANY Luis Alfredo Navas Contreras, MD, GERMANY Daniel Krahl, MD, GERMANY Marcus Streit, Prof., GERMANY
Comparison of Outcomes between Fungal and Non-fungal Periprosthetic Joint Infections in Total Knee Arthroplasty: A Propensity Score-Matched Analysis ePoster Presentation Hong Yeol Yang, MD, PhD, KOREA, REPUBLIC OF Jong-Keun Seon, MD, PhD, Prof, KOREA, REPUBLIC OF
Combined Single-Shot Infiltration Between the Popliteal Artery and Capsule of the Knee and Adductor Canal Block with Bupivacaine, Dexmedetomidine, and Dexamethasone for Total Knee Arthroplasty: A Propensity-Matched Analysis ePoster Presentation David Freccero, MD, UNITED STATES Aneesh V Samineni, BA, UNITED STATES Seroos Salavati, MD, UNITED STATES
The Statistical Fragility of Tourniquet Use In Total Knee Arthroplasty: A Systematic Review ePoster Presentation Kyle William Lawrence, BS, UNITED STATES John K Cordero, MD, UNITED STATES Ashley Brown, BS, UNITED STATES Xinning Li, MD, UNITED STATES Brett Hayden, MD, UNITED STATES Robert L Parisien, MD, UNITED STATES
Accuracy of the Component Alignment and Sizing in Total Knee Arthroplasty: Preoperative Templating and Postoperative Evaluation Using CT-Based 3D Pre-Operative Planning Software ePoster Presentation Takayuki Koya, MD, PhD, UNITED STATES Atsushi Sato, MD, PhD, JAPAN Jun Oike, MD,PhD, JAPAN Masataka Ota, MD, JAPAN Kanako Izukashi, MD, JAPAN Takayuki Okumo, MD, PhD, JAPAN Saki Yagura, MD, JAPAN Naoki Okuma, MD, JAPAN Fumiyoshi Kawashima, MD, JAPAN Hiroshi Takagi, MD, PhD, JAPAN Koji Kanzaki, Prof., JAPAN
Total Knee Arthroplasty Without Patellar Component Replacement. Does it Increase the Risk of Revision? Local Experience Analysis ePoster Presentation Zoy Anastasiadis, MD, CHILE Diego Edwards, MD, CHILE Sergio Arellano, MD, CHILE Andrés Schmidt-Hebbel, MD, CHILE Eduardo Gardella, MD, CHILE Nicolás González-Kusjanovic, MD, CHILE Alex Vaisman, MD, Prof., CHILE

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Intra- And Inter-Operator Reliability Assessment Of A Novel Extramedullary Accelerometer-Based Smart Cutting-Guide For Total Knee Arthroplasty: An In-Vivo Study

Intra- And Inter-Operator Reliability Assessment Of A Novel Extramedullary Accelerometer-Based Smart Cutting-Guide For Total Knee Arthroplasty: An In-Vivo Study

Purpose

Methods

Results

Conclusions

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Intra- And Inter-Operator Reliability Assessment Of A Novel Extramedullary Accelerometer-Based Smart Cutting-Guide For Total Knee Arthroplasty: An In-Vivo Study

Intra- And Inter-Operator Reliability Assessment Of A Novel Extramedullary Accelerometer-Based Smart Cutting-Guide For Total Knee Arthroplasty: An In-Vivo Study

Purpose

Methods

Results

Conclusions

More 2023 ISAKOS Congress Content