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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Efficacy of Functional Alignment Technique In Robotic-Arm Assisted Total Knee Arthroplasty ePoster Presentation Masashi Tamaki, MD, PhD, JAPAN Yuki Yamauchi, MD,PhD, JAPAN Seishiro Higa, MD, JAPAN Tomoyuki Shimakawa, MD, JAPAN Yuki Isobe, MD, JAPAN Teruya Ishibashi, MD,PhD, JAPAN Shoji Konda, PhD, JAPAN Tetsuya Tomita, M.D.,Ph.D , JAPAN
Long-Term Results of Per-Operative Knee Arthroscopy in Confirming Suitability for Unicompartmental Arthroplasty ePoster Presentation James Gill, MB BChir, BSc, FRCS, UNITED KINGDOM McMeniman J Peter, AUSTRALIA Timothy John Mcmeniman, MBBS(Med)/MBBS, FRACS FA(Orth)A, AUSTRALIA Daniel Johnson Brimm, BSc, MD, AUSTRALIA Peter T. Myers, AM, MBBS, FRACS, FAOrthA, AUSTRALIA
Modular Knee Arthrodesis as Definitive Treatment for Periprosthetic Infection, Bone Loss, and Failure of the Extensor Mechanism after Total Knee Arthroplasty ePoster Presentation Gloria Shoshana Coden, MD, UNITED STATES Maksym Bartashevskyy, BA, UNITED STATES Zachary Berliner, MD, UNITED STATES Ruijia Niu, MPH, UNITED STATES James V. Bono, MD, UNITED STATES Ayesha Abdeen, MD, UNITED STATES Eric L. Smith, MD, UNITED STATES
Antero-Posterior Translation of Mobile-Bearing in Mobile-Bearing Unicompartmental Knee Arthroplasty ePoster Presentation Takahiro Arakawa, MD, JAPAN Kenichi Kono, MD, PhD, JAPAN Tetsuya TOMITA, MD, PhD, JAPAN Shuji Taketomi, MD, PhD, JAPAN Ryota Yamagami, MD, JAPAN Kohei Kawaguchi, MD, PhD, JAPAN Tomofumi Kage, JAPAN Ryo Murakami, MD, JAPAN Hiroshi Inui, PhD, JAPAN Sakae Tanaka, MD, PhD, JAPAN
Calipered Measurements Method For Kinematically Aligned Total Knee Arthroplasty Has A Risk Of Excessive Varus Cut For The Proximal Tibia In Japanese Varus Knees ePoster Presentation Umit Kuwa, MD, PhD, JAPAN Masafumi Itoh, MD, PhD, JAPAN Junya Itou, MD, PhD, JAPAN Ken Okazaki, MD, PhD, JAPAN
Short Term Outcome of Tibial Defect Reconstruction In Primary Total Knee Arthroplasty: A Retrospective Study ePoster Presentation Sanjib Kumar Behera, MS (Orth), DNB (Rehab), DPMR, INDIA Madhumita Pradhan, BDS, MPH, MHA , INDIA Vikram Choudhary, MD, UNITED STATES
Does 1000 Mg Ferric Carboxylate Maltose Have an Additional Benefit on the Haemoglobin Recovery Post Total Knee Arthroplasty? - A Comparison with 500 Mg of Ferric Carboxymaltose ePoster Presentation Adit Rajesh Maniar, MBBS, MS Orthopaedics, DNB Orthopaedics, INDIA Ashwini Khokhar, MS, INDIA Akshay Nayak, M.B.B.S, M.S , INDIA Naveen Chandar, MBBS, INDIA Abhinav Mishra, MS, DNB, INDIA Rajesh Maniar, INDIA

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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

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Methods

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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