Clinical Multimedia: Ultrasound Examination of Medial Meniscus Posterior Root Tear

Authors

Yu-Xuan Wu, Department of Medical Education, National Taiwan University Hospital, Taipei, Taiwan.
Chien-Ping Chen, Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Taipei, Taiwan.
Hung-Jui Chuang, Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Taipei, Taiwan.Follow

Abstract

This report outlines the case of a 52-year-old woman with continuous left knee pain. An initial assessment, suggesting a meniscal tear based on joint line tenderness and a positive McMurray test, led to an ultrasonographic investigation. The ultrasound revealed left medial meniscus extrusion without positional change from full extension to 90° flexion, a hypoechoic cleft in the medial meniscus posterior root (MMPR) area, and the notable absence of the MMPR anterior to the posterior cruciate ligament (PCL), identified as the ultrasonographic ghost sign. A subsequent MRI confirmed a medial meniscus posterior root tear (MMPRT). MMPRT is known to cause biomechanical changes similar to those in total meniscectomy, thereby accelerating osteoarthritic degeneration in the knee. Given its advantages in terms of accessibility, affordability, and the ability to provide dynamic imaging, ultrasonography is a highly valuable tool for the early diagnosis of MMPRT.

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.

Recommended Citation

Wu, Yu-Xuan; Chen, Chien-Ping; and Chuang, Hung-Jui (2024) "Clinical Multimedia: Ultrasound Examination of Medial Meniscus Posterior Root Tear," Rehabilitation Practice and Science: Vol. 2024: Iss. 1, Article 7.
DOI: https://doi.org/10.6315/3005-3846.2237
Available at: https://rps.researchcommons.org/journal/vol2024/iss1/7