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The Effectiveness of Computed Tomography in Lateral Hinge Fracture in Medial Opening Wedge High Tibial Osteotomy

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The Effectiveness of Computed Tomography in Lateral Hinge Fracture in Medial Opening Wedge High Tibial Osteotomy

Masataka Ota, MD, JAPAN Atsushi Sato, MD, PhD, JAPAN Jun Oike, MD, PhD, JAPAN Kanako Izukashi, 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

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 Arthritis Fracture

Treatment / Technique

Osteotomy

Diagnosis Method

X-ray CT-Scan

Summary: The LHF after OWHTO surgery was evaluated using CT and compared and discussed with X-ray. The incidence of LHF is as high as 52.2%, and early postoperative CT is useful. The risk of LHF increases as the mean open distance increases, so more careful surgical technique is required.

Introduction

Medial opening wedge high tibial osteotomy (OWHTO) is a well-established treatment for medial compartment osteoarthritis of the knee, and the Lateral hinge fracture(LHF) is one of the complications after OWHTO. This study compared the detection rate of LHF after OWHTO on X-ray and CT.

Method

This study involved 46 Patients(24 male,22 female) undergoing OWHTO for primary medial compartment osteoarthritis at our hospital from July 2016 to September 2021.Patients who did not have a minimum 6-month of follow-up were excluded.The target weight-bearing point was determined at approximately 60% of the tibial plateau width from the medial border. LHF were evaluated on X-ray taken after surgery and CT taken the day after surgery according to the Takeuchi classification.

Results

Of the 46 knees, 6 knees(13%) were found on postoperative X-ray to have LHF.All 6 were classified as Type?:4,Type?:1,Type?:1. 24 knees(52.2%) were found on CT classified Type?:18,Type?:2,Type?:4.The mean open distance was significant difference between 8.6±1.8mm in the group without LHF and 10.4±1.9mm in the group with LHF(P=0.003).No significant defferences were found the correction loss and the amount of change in PTS in both group. P=0.303,P=0.535,respectively).

Conclusion

The LHF after OWHTO surgery was evaluated using CT and compared and discussed with X-ray. The incidence of LHF is as high as 52.2%, and early postoperative CT is useful. The risk of LHF increases as the mean open distance increases, so more careful surgical technique is required.

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The Effectiveness of Computed Tomography in Lateral Hinge Fracture in Medial Opening Wedge High Tibial Osteotomy

The Effectiveness of Computed Tomography in Lateral Hinge Fracture in Medial Opening Wedge High Tibial Osteotomy

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Method

Results

Conclusion

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The Effectiveness of Computed Tomography in Lateral Hinge Fracture in Medial Opening Wedge High Tibial Osteotomy

The Effectiveness of Computed Tomography in Lateral Hinge Fracture in Medial Opening Wedge High Tibial Osteotomy

Introduction

Method

Results

Conclusion

More 2023 ISAKOS Congress Content