ArticleJournal of experimental orthopaedics2025
Comparable medial meniscus extrusion in posterior root tears and radial tears with complex tears.
Article in Journal of experimental orthopaedics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Meniscal extrusion increases with age: Decade-specific magnetic resonance imaging reference values.Journal of experimental orthopaedics · 2026Article
- Meniscal extrusion: Multiple theories, one clinical challenge.Journal of experimental orthopaedics · 2026Article
- Comparable medial meniscus extrusion in posterior root tears and radial tears with complex tears.Journal of experimental orthopaedics · 2025Article
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Authors and funding
10 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Purpose: To elucidate the relationship between medial meniscus extrusion (MME) and meniscal tear type in osteoarthritic knees. It was hypothesised that the type of meniscal tears in osteoarthritic knees would be relevant factors in triggering MME. Methods: Patients with medial compartmental knee osteoarthritis were retrospectively reviewed. MME was defined as the distance from the extruding edge of the meniscus to a line drawn perpendicularly from the medial edge of the tibial plateau. Meniscal tears were classified into four types on magnetic resonance imaging: horizontal tear, medial meniscus posterior root tear (MMPRT), small radial tear and radial tear combined with a complex tear. A multivariate logistic regression analysis was performed to identify risk factors associated with pathological MME. Results: A total of 153 patients with 58 ± 8 years were included. The averages amount of MME values were 3.4 ± 1.9 mm for horizontal tears ( Conclusions: The presence of a radial tear combined with a complex tear was significantly correlated with MME, similar to MMPRT. This finding indicates that radial tears, which extend in multiple directions, may increase the risk of MME. Therefore, radial tears warrant careful evaluation, as they may carry a risk of MME comparable to that of MMPRTs. Level of Evidence: Ⅳ, retrospective case study.
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