Injury patterns of medial meniscus posterior root tears - 28/01/19
, Yuki Okazaki, Yoshiki Okazaki, Tomohito Hino, Yusuke Kamatsuki, Shin Masuda, Shinichi Miyazawa, Eiji Nakata, Joe Hasei, Toshiyuki Kunisada, Toshifumi Ozaki
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Abstract |
Introduction |
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.
Materials and methods |
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.
Results |
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%.
Discussion |
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.
Level of evidence |
IV, retrospective cohort study.
El texto completo de este artículo está disponible en PDF.Keywords : Medial meniscus, Posterior root tear, Injury pattern, Descending knee motion, Squatting
Esquema
Vol 105 - N° 1
P. 107-111 - février 2019 Regresar al número
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Bienvenido a EM-consulte, la referencia de los profesionales de la salud.