2025 ISAKOS Biennial Congress ePoster
Usefulness Of Dynamic Ultrasonographic Evaluation For The Diagnosis Of Medial Meniscus Posterior Root Tear
Kayo Matsumiya, PT, Kanazawa JAPAN
Ryosuke Hasama, PT, Kanazawa City, Ishikawa Prefecture JAPAN
Kenichi Goshima, MD, PhD, Kanazawa, Ishikawa JAPAN
Kanazawa Munehiro Hospital, Kanazawa, Ishikawa, JAPAN
FDA Status Not Applicable
Summary
MME decreases from 0°to 90° of flexion on ultrasonography with medial meniscus hoop function maintained, while MMPRT has a lack of decrease in MME from 0°to 90°of flexion.
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Abstract
Objective.
The purpose of this study was to evaluate the dynamics of medial meniscus during knee flexion-extension using ultrasonography in medial meniscus posterior root tear (MMPRT).
Method.
45 patients with MMPRT (MMPRT group), 37 patients with early knee osteoarthritis (EKOA group), and 31 healthy controls (C group) were enrolled in this study. Dynamic ultrasonographic evaluations were performed in all patients. Medial meniscus extrusion (MME) from 0°to 90°of flexion on ultrasonography were compared among three groups.
Result.
The mean MME was 3.5±1.2mm in knee extension and 4.4±1.7mm in 90°flexion in the MMPRT group, 3.6±1.3mm in extension and 2.6±1.4mm in flexion in the EKOA group, and 1.9±0.4mm in extension and 0.5±0.6mm in flexion in the C group. MME significantly increased from 0°to 90°of flexion on ultrasonography in the MMPRT group, while MME significantly decreased in the EKOA group and C group.
Conclusions.
MME decreases from 0°to 90° of flexion on ultrasonography with medial meniscus hoop function maintained, while MMPRT has a lack of decrease in MME from 0°to 90°of flexion. Dynamic evaluation of MME using ultrasonography is useful for the diagnosis of MMPRT.