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Three-Dimensional Evaluation of Distal Femoral Valgus Angle Using Whole Leg CT in Total Knee Arthroplasty

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Three-Dimensional Evaluation of Distal Femoral Valgus Angle Using Whole Leg CT in Total Knee Arthroplasty

Atsushi Sato, MD, PhD, JAPAN Jun Oike, MD, PhD, JAPAN Masataka Ota, MD, JAPAN Kanako Izukashi, MD, JAPAN Saki Yagura, MD, JAPAN Takayuki Okumo, MD, PhD, JAPAN Naoki Okuma, MD, JAPAN Takayuki Koya, MD, PhD, JAPAN Fumiyoshi Kawashima, MD, JAPAN Hiroshi Takagi, MD, PhD, JAPAN Koji Kanzaki, Prof., JAPAN

Department of Orthopedic Surgery, Showa University Koto Toyosu Hospital, Koto-ku, Tokyo, JAPAN

2023 Congress ePoster Presentation 2023 Congress Not yet rated

Anatomic Location

Knee

Anatomic Structure

Bones

Diagnosis / Condition

Osteoarthritis

Treatment / Technique

Arthroplasty

Patient Populations

Elderly

Diagnosis Method

CT-Scan

Sports Medicine

Basic Science Biomechanics Research

Summary: Distal Femoral Valgus Angle using whole leg 3D-CT varies in each patient in Total Knee Arthroplasty

Introduction

Proper implant positioning is important to get suitable leg alignment in total knee arthroplasty (TKA). However, the three-dimensional evaluation of accurate lower limb alignment is still controversial.

Purpose

Therefore, we performed a three-dimensional evaluation of the distal femoral valgus angle (DFVA) using full-leg CT before TKA.

Methods

Consecutive 296 patients (169 females, 48 males, mean age: 75.4 y.o), yielded 296 knees were included in this study. CT-based patient-specific 3D femur model by ZedKnee software (LEXI) was used to define a mechanical axis and distal anatomical axis of the femur. The case where the angle deviates from the DFVA by ± 3 ° was defined as the outlier, and the ratio of the outlier was evaluated.

Results

The average DFVA was 6.2 ± 2.2 °, of which outliers were found in 53 knees (17.9%). Of the outliers, 22 (7.6%) had DFVA less than 3 ° and 31 (10.5%) had greater than 9 °.

Conclusion

It should be noted that the same cutting angle for performing the distal femoral bone cut in TKA may lead to improper placement of the femoral component.

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Combined Fixed-Bearing Unicompartmental Knee Arthroplasty and Anterior Cruciate Ligament Reconstruction ePoster Presentation Claudio Legnani, MD, ITALY Enrico Borgo, MD, ITALY Vittorio Macchi, MD, ITALY Alberto Ventura, MD, ITALY
Intraoperative Surgeon-Performed vs. Conventional Anesthesiologist-Performed Continuous Adductor Canal Block In Total Knee Arthroplasty: A Randomized Controlled Trial ePoster Presentation Chayut Chaiperm, MD, THAILAND Srihatach Ngarmukos, MD, THAILAND Aree Tanavalee, MD, THAILAND Chotetawan Tanavalee, MD, THAILAND Wirinaree Kampitak, MD, THAILAND
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
No Difference In Sports Participation And Patient-Reported Functional Outcomes Between Total Knee Arthroplasty And Unicompartmental Knee Arthroplasty At Minimum 2-Year Follow-Up In A Matched Control Study ePoster Presentation Amit Meena, MBBS, MS, DNB, INDIA Elisabeth Abermann, MD, AUSTRIA Christian Hoser, MD, AUSTRIA Luca Farinelli, MD, ITALY Caroline Hepperger, PhD, AUSTRIA Akshya Raj, MBBS,MS, INDIA Mohit Kumar Patralekh, MBBS, MS(Orthopaedics), DNB(Orthopaedics), MNAMS, INDIA Christian Fink, MD, Prof., AUSTRIA
Association Of Ischemia Time And Serum Lactate Levels With Postoperative Pain In Primary Total Knee Arthroplasty At The Orthopedics And Traumatology Service At The Unidad Médica De Alta Especialidad No. 1 Bajío. ePoster Presentation Juan Antonio García Ramírez, MD, MEXICO
Influence of Mini Approach Instrumentation on Component Alignment In Unicondylar Knee Replacement ePoster Presentation Vinod Kumar, MBBS, MS, DNB, MNAMS, INDIA Deepak Gupta, MBBS, MS, INDIA Ananya Sharma, MBBS, MS, DNB , INDIA
Association Between The Femoral And Tibial Component Positions and Intraoperative Knee Kinematics In Posterior-Stabilized Total Knee Arthroplasty ePoster Presentation Mitsuru Hanada, MD, PhD, JAPAN Yukihiro Matsuyama, MD, PhD, Prof., JAPAN
Patellar Medial-lateral Position can be Used to Correct the Effect of Leg Rotation on Preoperative Planning in Total Knee Arthroplasty for Varus Knees ePoster Presentation Shinichiro Nakamura, MD, PhD, JAPAN Shota Takemoto, MD, JAPAN Shinichi Kuriyama, MD, PhD, JAPAN Kohei Nishitani, MD, PhD, JAPAN Hiromu Ito, MD, PhD, JAPAN Mutsumi Watanabe, MD, PhD, JAPAN Young Dong Song, MD, PhD, UNITED STATES Shuichi Matsuda, MD, PhD, JAPAN
Effect of Direct Adductor Canal Block Performed by a Surgeon in a Patient Who Underwent Simultaneous Bilateral TKA ePoster Presentation Man-Soo Kim, MD, PhD, KOREA, REPUBLIC OF Dongho Kwak, MD, KOREA, REPUBLIC OF Sungcheol Yang, MD, KOREA, REPUBLIC OF Hyukjin Jang, MD, KOREA, REPUBLIC OF Ryu Kyoung Cho, MD, KOREA, REPUBLIC OF Yong In, MD, PhD, KOREA, REPUBLIC OF

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Three-Dimensional Evaluation of Distal Femoral Valgus Angle Using Whole Leg CT in Total Knee Arthroplasty

Three-Dimensional Evaluation of Distal Femoral Valgus Angle Using Whole Leg CT in Total Knee Arthroplasty

Introduction

Purpose

Methods

Results

Conclusion

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Three-Dimensional Evaluation of Distal Femoral Valgus Angle Using Whole Leg CT in Total Knee Arthroplasty

Three-Dimensional Evaluation of Distal Femoral Valgus Angle Using Whole Leg CT in Total Knee Arthroplasty

Introduction

Purpose

Methods

Results

Conclusion

More 2023 ISAKOS Congress Content