ID 57095
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Okazaki, Yuki Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
Furumatsu, Takayuki Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences Kaken ID publons
Kodama, Yuya Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
Hino, Tomohito Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
Kamatsuki, Yusuke Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
Okazaki, Yoshiki Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
Masuda, Shin Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
Miyazawa, Shinichi Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
Endo, Hirosuke Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
Tetsunaga, Tomonori Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences Kaken ID
Yamada, Kazuki Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
Ozaki, Toshifumi Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences Kaken ID researchmap
Abstract
BACKGROUND:
Medial meniscus posterior root tear (MMPRT) results in joint overloading and degenerative changes in the knee. Favorable clinical outcomes have been reported after transtibial pullout repair of MMPRT. To date, however, in vivo tibial rotational changes before and after root repair remain poorly understood. The purpose of this study was to investigate postoperative changes in tibial rotation following MMPRT pullout repair.
HYPOTHESIS:
Pathological external rotation of the tibia in the knee-flexed position is caused by MMPRT and is reduced after transtibial pullout repair.
PATIENTS AND METHODS:
Fifteen patients who underwent MMPRT pullout repair and 7 healthy volunteers were included. Magnetic resonance imaging examinations were performed in the 10° and 90° knee-flexed positions. The angles between the surgical epicondylar axis and a line between the medial border of the patellar tendon and the apex of the medial tibial spine were measured. Baseline was defined as a line lying at a right angle to the other, and a value was positive and negative when the tibia rotated internally and externally, respectively.
RESULTS:
In the volunteer's normal knees, tibial internal rotation was +1.00°±3.27° at 10° flexion and +4.14°±3.46° at 90° flexion. In the MMPRT preoperative knees, tibial internal rotation was +1.07°±3.01° at 10° flexion and +1.27°±2.96° at 90° flexion. In the postoperative knees, tibial internal rotation was +1.60°±2.85° at 10° flexion and +4.33°±2.89° at 90° flexion.
DISCUSSION:
This study demonstrates discontinuity of the MM posterior root may induce a pathological external rotation of the tibia during knee flexion and that MMPRT pullout repair reduces the pathological external rotation of the tibia in the knee-flexed position.
Keywords
Magnetic resonance imaging
Medial meniscus
Posterior root tear
Tibial rotation
Transtibial pullout repair
Published Date
2019-02-28
Publication Title
Orthopaedics & Traumatology: Surgery & Research
Volume
volume105
Issue
issue1
Publisher
Elsevier
Start Page
113
End Page
117
ISSN
18770568
Content Type
Journal Article
language
日本語
OAI-PMH Set
岡山大学
File Version
author
PubMed ID
DOI
Web of Science KeyUT
Related Url
isVersionOf https://doi.org/10.1016/j.otsr.2018.10.005
License
https://creativecommons.org/licenses/by-nc-nd/4.0/deed.ja
Citation
Yuki Okazaki, Takayuki Furumatsu, Yuya Kodama, Tomohito Hino, Yusuke Kamatsuki, Yoshiki Okazaki, Shin Masuda, Shinichi Miyazawa, Hirosuke Endo, Tomonori Tetsunaga, Kazuki Yamada, Toshifumi Ozaki, Transtibial pullout repair of medial meniscus posterior root tear restores physiological rotation of the tibia in the knee-flexed position, Orthopaedics & Traumatology: Surgery & Research, Volume 105, Issue 1, 2019, Pages 113-117, ISSN 1877-0568, https://doi.org/10.1016/j.otsr.2018.10.005.
Open Access (Publisher)
non-OA
Open Archive (publisher)
Open Archive