このエントリーをはてなブックマークに追加
ID 60881
FullText URL
Author
Okazaki, Yoshiki Department of Orthopaedic Surgery, Okayama University Graduate School
Furumatsu, Takayuki Department of Orthopaedic Surgery, Okayama University Graduate School Kaken ID publons
Yamaguchi, Takuya Division of Radiology, Medical Technology Department, Okayama University Hospital
Kodama, Yuya Department of Orthopaedic Surgery, Iwakuni Medical Center
Kamatsuki, Yusuke Department of Orthopaedic Surgery, Okayama University Graduate School
Masuda, Shin Department of Orthopaedic Surgery, Okayama University Graduate School
Okazaki, Yuki Department of Orthopaedic Surgery, Okayama University Graduate School
Hiranaka, Takaaki Department of Orthopaedic Surgery, Okayama University Graduate School
Zhang, Ximing Department of Orthopaedic Surgery, Okayama University Graduate School
Ozaki, Toshifumi Department of Orthopaedic Surgery, Okayama University Graduate School Kaken ID publons researchmap
Abstract
Purpose
This study aimed to clarify the advantages of three-dimensional (3D) magnetic resonance imaging (MRI) over two-dimensional (2D) MRI in measuring the size of the medial meniscus (MM) and to analyse the volumes of MM and the extruded meniscus in patients with MM posterior root tear (MMPRT), at 10° and 90° knee flexion.
Methods
This study included 17 patients with MMPRTs and 15 volunteers with uninjured knees. The MMs were manually segmented for 3D reconstruction; thereafter, the extruded part separated from the tibial edge was determined. The length, width, height, and extrusion of MM were measured by the 2D and 3D methods, and compared. The MM volume, extruded meniscus volume, and their ratio were also calculated using 3D analysis software in the two groups.
Results
The estimated length and posterior height of MM were larger with 3D MRI than with 2D MRI measurements. The MM volume was significantly greater in MMPRT knees than in normal knees, with increasing MM height. In MMPRT knees, the mean volume of the extruded meniscus and its ratio significantly increased by 304 mm3 (p = 0.02) and 9.1% (p < 0.01), respectively, during knee flexion.
Conclusions
This study demonstrated that 3D MRI could estimate the precise MM size and that MMPRT caused swelling of the meniscus due to the increased thickness in the posteromedial part. The clinical significance of this study lies in its 3D evaluation of MM volume, which should help the surgeon understand the biomechanical failure of MM function and improve MMPRT repair technique.
Keywords
Medial meniscus
Posterior root tear
Osteoarthritis
Meniscal volume
Medial extrusion
Three-dimensional magnetic resonance imaging
Flexed-knee position
Note
This is a post-peer-review, pre-copyedit version of an article published in Knee Surgery, Sports Traumatology, Arthroscopy. The final authenticated version is available online at: http://dx.doi.org/10.1007/s00167-019-05580-6.
Published Date
2019-06-26
Publication Title
Knee Surgery, Sports Traumatology, Arthroscopy
Volume
volume28
Issue
issue11
Publisher
Springer
Start Page
3405
End Page
3415
ISSN
0942-2056
NCID
AA10973641
Content Type
Journal Article
language
英語
OAI-PMH Set
岡山大学
File Version
author
PubMed ID
DOI
Web of Science KeyUT
Related Url
isVersionOf https://doi.org/10.1007/s00167-019-05580-6