ArticleKnee surgery & related research2021
A characteristic MRI finding to diagnose a partial tear of the medial meniscus posterior root: an ocarina sign.
Article in Knee surgery & related research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 2 of them syntheses that pooled it.
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Who cites it
12 citing papers in PubMed, 2 syntheses or guidelines pooled it, 14 citations in OpenAlex.
- Evaluating the diagnostic performance of MRI-based signs for identification of meniscus posterior root tears: a systematic review and meta-analysis.Journal of orthopaedic surgery and research · 2026Pooled it
- Rehabilitation after Repair of Medial Meniscus Posterior Root Tears: A Systematic Review of the Literature.Clinics in orthopedic surgery · 2023Pooled it
- Diagnosis and Treatment Strategies of Meniscus Root Tears: A Scoping Review.Orthopaedic journal of sports medicine · 2024Article
- Superior outcomes of pullout repairs for medial meniscus posterior root tears in partial tear compared to complete radial tear.Knee surgery & related research · 2024Article
- Correlation between Subchondral Insufficiency Fracture of the Knee and Osteoarthritis Progression in Patients with Medial Meniscus Posterior Root Tear.Diagnostics (Basel, Switzerland) · 2023Article
- Time-Dependent Increase in Medial Meniscus Extrusion Predicts the Need for Meniscal Repair in Patients with Partial Medial Meniscus Posterior Root Tears: A Case-Control Study.Indian journal of orthopaedics · 2023Article
- Analysis of Discordant Findings between 3T Magnetic Resonance Imaging and Arthroscopic Evaluation of the Knee Meniscus.Journal of clinical medicine · 2023Article
- The clinical and radiographic outcomes of type 2 medial meniscus posterior root tears following transtibial pullout repair.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Article
- Meniscus extrusion is a predisposing factor for determining arthroscopic treatments in partial medial meniscus posterior root tears.Knee surgery & related research · 2023Article
- Changes in Bone Marrow Lesions Following Root Repair Surgery Using Modified Mason-Allen Stitches in Medial Meniscus Posterior Root Tears.Medicina (Kaunas, Lithuania) · 2022Article
- Clinical evaluation of suture materials for transtibial pullout repair of medial meniscus posterior root tear.Knee surgery & related research · 2022Article
- Mid- to Long-Term Outcomes After Medial Open-Wedge High Tibial Osteotomy in Patients With Radiological Kissing Lesion.Orthopaedic journal of sports medicine · 2022Article
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7 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundDiagnosing partial tears of the medial meniscus (MM) posterior root is difficult. The aim of this study was to evaluate diagnostic values involved in conventional magnetic resonance imaging (MRI) features of MM posterior root tears (MMPRTs) and find other MRI-based findings in patients with partial MMPRTs.
methodsEighteen patients who had arthroscopically confirmed partial MMPRTs were included. As a control, 18 patients who underwent partial meniscectomy for other types of MM tears were evaluated. Isolated partial MMPRTs were classified into the following three types: type A, accurate partial stable tear (cleavage < 1/2 of root width); type B, bridged unstable root tear (cleavage ≥ 1/2 of root width); type C, complex horn tear expanded to the root. Conventional MRI-based findings of MMPRTs were evaluated between two groups (n = 23). Posterior root irregularity, bone marrow spot, and ocarina-like appearance showing several condensed circles in triangular meniscal horn (ocarina sign) were also evaluated.
resultsPosterior root irregularity and bone marrow spot were frequently observed in the partial MMPRTs (47.8%), compared with the other MM tears (P = 0.007 and 0.023, respectively). The ocarina sign was detected in 69.6% of patients with partial MMPRTs. A significant difference between two groups was observed in a positive ratio of ocarina sign (P < 0.001). Types A, B, and C of the partial tear/damage were observed in three, eight, and seven patients, respectively. The ocarina sign was the most common MRI finding in each type of partial MMPRT.
conclusionsThis study demonstrated that a characteristic MRI finding, "ocarina sign," was frequently observed in patients with partial tear/damage of the MM posterior root. The ocarina sign was the most common MRI finding in several types of partial MMPRTs. Our results suggest that the ocarina sign may be useful to diagnose unnoticed partial MMPRTs. LEVEL OF EVIDENCE: IV, retrospective comparative study.
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