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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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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
A Prospective Randomised Study to Compare the Clinical and Radiological Outcomes of Functionally Aligned versus Mechanically Aligned Total Knee Arthroplasty with Robotic Arm Assistance ePoster Presentation Jai Thilak Kailathuvalapil, MS, MCh, FRCS, INDIA Amal Antony Paul, MBBS, INDIA
High Cure Rate In Hematogenous TKA PJI At A Long-Term Follow-Up By Means Of Dair Procedure ePoster Presentation Daniel Pérez-Prieto, MD, SPAIN Albert Fontanellas, MD, SPAIN Raúl Torres-Claramunt, PhD, SPAIN Juan Francisco Sanchez-Soler, MD, PhD, SPAIN Joan Carles Monllau, MD, PhD, Prof., SPAIN Pedro Hinarejos, MD, PhD, SPAIN
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
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, JAPAN 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
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
The Effect of Minor Adjustments to Tibial and Femoral Component Position on Soft Tissue Balance in Robotic Total Knee Arthroplasty ePoster Presentation Simon W. Young, MD, FRACS, NEW ZEALAND Matthew Carter, NEW ZEALAND Gavin William Clark, MBBS, FRACS, AUSTRALIA Christina Esposito, PhD, AUSTRALIA Matthew Walker, MBChB, FRACS, NEW ZEALAND
Intraoperative Varus-Valgus Joint Laxity Pattern Was Associated With Postoperative Knee Flexion Angle and Patient-Reported Outcome Measures in Bicruciate-Stabilized Total Knee Arthroplasty. ePoster Presentation Ryota Yamagami, MD, JAPAN Kenichi Kono, MD, PhD, JAPAN Kohei Kawaguchi, MD, PhD, JAPAN Tomofumi Kage, JAPAN Ryo Murakami, MD, JAPAN Takahiro Arakawa, MD, JAPAN Hiroshi Inui, PhD, JAPAN Shuji Taketomi, MD, PhD, JAPAN Sakae Tanaka, MD, PhD, JAPAN

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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