ArticleJournal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine2022
Medial Meniscal Extrusion Evaluation With Weight-Bearing Ultrasound: Correlation With MR Imaging Findings and Reported Symptoms: Correlation With MR Imaging Findings and Reported Symptoms.
Article in Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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Who cites it
18 citing papers in PubMed, 27 citations in OpenAlex.
- Musculoskeletal Ultrasound Reliability in Knee Osteoarthritis: A Pilot Study of Cartilage Thickness, Osteophytes and Weight-Bearing Meniscal Extrusion.Medicina (Kaunas, Lithuania) · 2026Article
- Medial Meniscus Physiologic Extrusion Across Sitting, Bipedal, and Unipedal Stance: The Roles of Generalized Hypermobility and Patellar Tendon Stiffness.Diagnostics (Basel, Switzerland) · 2026Article
- Meniscal Extrusion: A Key Modifiable Driver of Meniscal and Cartilage Degeneration.Current reviews in musculoskeletal medicine · 2026Review
- Beyond the ACL: The Hidden Impact of Ramp Tears on Knee Stability.The archives of bone and joint surgery · 2026Review
- Meniscus extrusion on standing weightbearing ultrasound is associated with limb alignment and posterior tibial slope in healthy knees.Journal of experimental orthopaedics · 2026Article
- Physiologic Medial Meniscal Extrusion With Loading and Flexion Detected by Ultrasound.Orthopaedic journal of sports medicine · 2025Article
- Use of Dynamic Ultrasonography in the Evaluation of Meniscal Extrusion: A Technical Report.Cureus · 2025Article
- Ultrasound quantification of knee meniscal extrusion: the potential of weight-bearing and dynamic evaluations. A systematic review.EFORT open reviews · 2025Article
- Freeze drying and Lugol staining of human menisci reveal circumferential fibre volumes to guide meniscus implant design and virtual simulation.Scientific reports · 2025Article
- In vivo dynamic intrusion and extrusion of the menisci in varus and valgus load within a healthy population.Journal of experimental orthopaedics · 2025Article
- Meniscal extrusion: Proposal for a novel qualitative classification.Journal of experimental orthopaedics · 2025Review
- Assessment of meniscal extrusion with ultrasonography: a systematic review and meta-analysis.Knee surgery & related research · 2024Article
- Ultrasounds outperform magnetic resonance imaging in quantifying meniscal extrusion in patients with knee osteoarthritis.Journal of experimental orthopaedics · 2024Article
- Ultrasound Imaging in Diagnosis and Management of Lower Limb Injuries: A Comprehensive Review.Medical science monitor : international medical journal of experimental and clinical research · 2024Review
- The Role of Ultrasound in the Diagnosis and Treatment of Meniscal Injuries.Current reviews in musculoskeletal medicine · 2024Review
- Clinical and radiologic outcomes in patients with meniscal root tears.BMC musculoskeletal disorders · 2024Article
- The meniscal extrusion index is a reliable indirect sign of different meniscal lesion patterns: a classification based on percentage of meniscal extrusion.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Article
- Meniscus extrusion after a medial meniscus root repair: Where we are and how can we solve it?Science progressReview
Corrections and comments
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Authors and funding
6 authors at 5 institutions in 3 countries.
Funding
Abstract
objectivesTo compare medial meniscal extrusion on weight-bearing ultrasound (US) with supine US and magnetic resonance (MR) imaging correlating with meniscal pathology and reported symptoms.
methodsIRB approved study with informed consent. Patients obtaining routine knee MR imaging for suspected knee pathology were prospectively evaluated with supine and weight-bearing US of the medial meniscus. Meniscal extrusion was measured independently by two fellowship-trained musculoskeletal radiologists. Correlation was made to presence or absence of meniscal degeneration or tear on MR imaging, as well as reported symptoms. Statistical significance was calculated via intraclass correlation coefficient (ICC) and analysis of variance (ANOVA).
resultsNinety-nine knees from 95 subjects (50 males, 45 females; mean age 45 ± 15 years) were included. Mean medial meniscal extrusion measured at US for a normal meniscus (n = 36) was 0.8 mm when supine, increasing to 1.6 mm on weight-bearing. Mean meniscal extrusion in subjects with mucoid degeneration (n = 20) and those with meniscal tears (n = 43) was 1.6 mm, increasing to 2.3 mm with weight bearing. Inter-reader reliability showed ICC values of 0.853 to 0.940. There was a significant difference in medial meniscal extrusion comparing subjects with a normal medial meniscus at magnetic resonance imaging (MRI) and subjects with either meniscal degeneration or tear. There was no significant difference in degree of meniscal extrusion between subjects with meniscal degeneration or tear. There was trend of worsening symptoms and increasing functional limitations moving from normal meniscus to meniscal degeneration to meniscal tear.
conclusionsA normal meniscus shows lesser mobility between supine and upright position, than a pathologic meniscus. Both mucoid degeneration and meniscal tear demonstrate extrusion in the supine position, which increases with weight-bearing position.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.