Injury patterns of medial meniscus posterior root tears

Medial meniscus posterior root tear (MMPRT) can occur in middle-aged patients who have a posteromedial painful popping during light activities. MMPRTs are more common in patients with increased age, female gender, sedentary lifestyle, obesity, and varus knee alignment. However, injury mechanisms of...

Full description

Saved in:
Bibliographic Details
Published in:Orthopaedics & traumatology, surgery & research surgery & research, 2019-02, Vol.105 (1), p.107-111
Main Authors: Furumatsu, Takayuki, Okazaki, Yuki, Okazaki, Yoshiki, Hino, Tomohito, Kamatsuki, Yusuke, Masuda, Shin, Miyazawa, Shinichi, Nakata, Eiji, Hasei, Joe, Kunisada, Toshiyuki, Ozaki, Toshifumi
Format: Article
Language:English
Subjects:
Accidental Falls
Accidents, Traffic
Aged
Descending knee motion
Female
Humans
Injury pattern
Magnetic Resonance Imaging
Male
Medial meniscus
Menisci, Tibial
Middle Aged
Posterior root tear
Posture
Retrospective Studies
Rupture - diagnostic imaging
Rupture - etiology
Squatting
Tibial Meniscus Injuries - diagnostic imaging
Tibial Meniscus Injuries - etiology
Walking
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Medial meniscus posterior root tear (MMPRT) can occur in middle-aged patients who have a posteromedial painful popping during light activities. MMPRTs are more common in patients with increased age, female gender, sedentary lifestyle, obesity, and varus knee alignment. However, injury mechanisms of minor traumatic MMPRTs are still unclear. We hypothesized that high flexion activities are the major cause of MMPRTs. The aim of this study was to clarify injury patterns of MMPRTs. One hundred patients were diagnosed having MMPRTs after posteromedial painful popping episodes. Details of posteromedial painful popping episode, situation of injury, and position of injured leg were obtained from the patients by careful interviews. Injury patterns were divided into 8 groups: descending knee motion, walking, squatting, standing up action, falling down, twisting, light exercise, and minor automobile accident. A descending knee motion was the most common cause of MMPRTs (38%) followed by a walking injury pattern (18%) and a squatting action related to high flexion activities of the knee (13%). The other injury patterns were less than 10%. Descending knee motions associated with descending stairs, step, and downhill slope are the most common injury pattern of MMPRTs. High flexion activities of the knee are not the greatest cause of MMPRTs. Our results suggest that the descending action with a low knee flexion angle may trigger minor traumatic MMPRTs. IV, retrospective cohort study.
ISSN:1877-0568
1877-0568
DOI:10.1016/j.otsr.2018.10.001