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No dynamic extrusion of the medial meniscus in ultrasound examination in patients with confirmed root tear lesion
- Source :
- Knee Surgery, Sports Traumatology, Arthroscopy. 27:3311-3317
- Publication Year :
- 2019
- Publisher :
- Springer Science and Business Media LLC, 2019.
-
Abstract
- Extrusion of the medial meniscus evaluated on magnetic resonance imaging (MRI) has been described as indirect radiological sign for meniscus root tears. However, ultrasound detectable dynamic extrusion is observed in normal physiological settings. The aim of the present study was to analyze the dynamic meniscal extrusion using ultrasound (US) examination in patients with MRI-confirmed meniscal root tears. The hypothesis was that dynamic meniscus extrusion is reduced in patients with medial root tear but not in the healthy meniscus. Twenty-five patients with a medial root lesion of the meniscus (group I) and 25 healthy controls (group II) were enrolled in this study. The medial meniscus extrusion (MME) of the index knee was determined using ultrasound (US) in supine position and under full weight bearing. Standard knee MRI was used for determining whether the patients were eligible for this study according to the inclusion and exclusion criteria, respectively. In group I, the mean MME was 3.6 mm (± 1.0 mm) in supine position and 3.7 mm (± 0.9 mm) under full weight bearing according to US measurements. The mean Δ-extrusion was 0.1 mm (± 0.2 mm) and the ratio was 1.0 (± 0.1). Mean medial meniscus extrusion on MRI was 3.9 mm (± 0.9 mm). In group II, mean MME was 1.3 mm (± 0.3 mm) in supine position (US) and 2.3 mm (± 0.4 mm) under full weight bearing (US). The mean Δ-extrusion was 1.0 mm (± 0.4 mm) and the extrusion ratio was 1.8 (± 0.4). In this group, mean extrusion in MRI was 1.4 mm (± 0.7 mm). The difference in mean ultrasound Δ-extrusion, ratio, and MRI extrusion between both groups was statistically significant (p
- Subjects :
- Male
medicine.medical_specialty
Supine position
Meniscus (anatomy)
Menisci, Tibial
Weight-Bearing
Lesion
03 medical and health sciences
0302 clinical medicine
Supine Position
medicine
Humans
Orthopedics and Sports Medicine
Aged
Ultrasonography
Rupture
030222 orthopedics
medicine.diagnostic_test
business.industry
Ultrasound
Magnetic resonance imaging
030229 sport sciences
Middle Aged
musculoskeletal system
Magnetic Resonance Imaging
Tibial Meniscus Injuries
medicine.anatomical_structure
Case-Control Studies
Orthopedic surgery
Tears
Female
Surgery
medicine.symptom
Radiology
business
Nuclear medicine
Medial meniscus
Subjects
Details
- ISSN :
- 14337347 and 09422056
- Volume :
- 27
- Database :
- OpenAIRE
- Journal :
- Knee Surgery, Sports Traumatology, Arthroscopy
- Accession number :
- edsair.doi.dedup.....4a021c75aaa53260478a2eaed95e34ef