2024年9月5日 · With a sensitivity of ~95% and a specificity of 81% for medial meniscal tears and sensitivity of ~85% and a specificity of 93% for lateral meniscal tears 2,5, MRI is the modality of choice when a meniscal tear is suspected, with sagittal images being the most sensitive 5.

(6a) A radial tear of the body of the lateral meniscus also appears vertical on sagittal MR images (arrow), though in the case of radial tears, the lesion is oriented perpendicular to the c-shaped fibers of the meniscus.

2014年8月22日 · MRI has sensitivity of 87–96% and specificity of 84–94% for medial meniscal tears and sensitivity of 70–92% with specificity of 91–98% for diagnosing tears of the lateral meniscus [1 – 5].

2012年11月23日 · The posterior root of the lateral meniscus is a particularly difficult area to assess on MRI for a tear. As the posterior horn extends medially into the root, the meniscus rises from the level of the lateral tibial plateau to attach more superiorly on the tibial eminence.

2014年7月14日 · High-spatial-resolution imaging of the meniscus can be performed using fast spin-echo and three-dimensional MR imaging sequences. Normal anatomic structures that can mimic a tear include the meniscal ligament, meniscofemoral ligaments, popliteomeniscal fascicles, and meniscomeniscal ligament.

2016年10月24日 · The MRI revealed a longitudinal tear in the posterior horn of the lateral meniscus. Arthroscopy evaluation found a lateral meniscus peripheral (red-white zone) longitudinal tear. The patient underwent an all-inside lateral meniscus repair.

MRI is a highly accurate imaging method for diagnosing meniscal tears. To avoid errors in diagnosing meniscal tears, those interpreting MR examinations of the knee need to be aware of the attachments of the menisci and the normal variations in meniscal anatomy that may resemble a meniscal tear.

Axial view MRI scan demonstrating a complete radial tear of the lateral meniscus. The meniscus is essentially sliced in two and the edges tend to pull apart. These tears are particularly ominous.

2018年2月1日 · This article characterizes common meniscal pathologies, reviews magnetic resonance imaging (MRI) diagnostic criteria for meniscal tears, and identifies difficult-to-detect tears and fragments and the best MRI sequences and practices for recognizing these lesions.

There are a few varieties frequently seen in MRI reports. A radial tear is a tear across the fibers of the meniscus. This causes damage to the functionality of the meniscus and often leads to a piece of meniscus that is unstable.

Tell your doctor of any recurrent swelling or of your knee repeatedly giving way. A magnetic resonance imaging (MRI) scan is often used to diagnose meniscal injuries. The meniscus shows up as black on the MRI. Any tears appear as white lines. An MRI is 70 to 90 percent accurate in identifying whether the meniscus has been torn and how badly.

Unfortunately, multiple studies indicate that MRI has the lowest sensitivity for identifying meniscal tears in the posterior horn of the lateral meniscus, which has been attributed to various factors including pulsation artifact from the popliteal artery, volume averaging and magic angle associated with the contour of the tibial eminence and ...

To diagnose a lateral meniscus tear, your knee specialist will perform an x-ray and MRI on the affected knee. An x-ray cannot detect a meniscus tear but it will detect other bony related conditions. An MRI is typically quite accurate in detecting a tear of the lateral meniscus.

Where Did the Meniscus Go after a Root Tear? Here is a patient with signal in the lateral meniscus. Let's go all the way to the root. Learn to evaluate and diagnose a lateral meniscus tear and understand a meniscal psuedo-extrusion vs true extrusion on MRI. Chief Medical Officer, ProScan Imaging. Founder, MRI Online. © 2025 Medality.

We retrospectively evaluated MR examinations of patients with arthroscopically proven torn and intact posterior roots of the lateral meniscus to determine whether we could diagnose root tears using the standard diagnostic criteria of meniscal distortion and meniscal signal to the surface.

2021年5月27日 · Dr. Christopher Centeno describes how to read a knee MRI for meniscal tear and what it means to have a meniscus tear vs. a symptomatic one.

2024年6月12日 · These tears may be difficult to visualize on arthroscopy. Epidemiology. They usually tend to be degenerative with a greater occurrence in older individuals. Pathology Associations. discoid meniscus; it is considered the most common type of tear to be associated with a meniscal cyst 4; Radiographic features MRI

The menisci of the knee are accurately evaluated by MRI. Knowledge of normal anatomy, imaging parameters, imaging appearance of the normal and torn meniscus, and common anatomic variants and pitfalls are essential in obtaining the correct imaging diagnosis.

Coronal MRI scan demonstrating a posterior horn lateral meniscus type II root tear. The lateral meniscus root is torn up to 12% of the time concurrently with an ACL tear.

1 天前 · Discoid morphology was determined on MRI by the presence of >50% lateral meniscal tissue overall area compared with the lateral tibiofemoral compartment without craniocaudal measurements or lateral:medial meniscal height ratios available at the time of interpretation. ... Figure 2 15-year-old male with a non-discoid lateral meniscus tear.

2024年5月9日 · An MRI scan may be needed to confirm the diagnosis and extent of the injury. What is a Lateral meniscus tear? A lateral meniscus tear (torn meniscus) is a tear of the semicircular fibrous cartilage discs in the knee.

2021年6月30日 · This article highlights five knee injuries that, in the author's experience, are commonly overlooked by readers inexperienced in knee MRI: ramp lesions, meniscocapsular tears, meniscal root ligament tears, posterior capsular ligament tears, …

2025年1月29日 · An MRI is the best test for finding small tears. However, it's usually not needed unless a meniscal tear is suspected, symptoms are significant, and surgery would be offered to repair a confirmed tear. Treatment options for a torn meniscus. The treatment for a torn meniscus depends on factors like the tear's severity, size and location, and ...

2025年2月9日 · Patients were grouped into DLM injury and lateral meniscus (LM) injury groups based on their arthroscopic diagnosis results, and their identification numbers and group codes were documented. ... By evaluating the parameters of DLM or meniscal tears on MRI, we seek to enhance predictive accuracy and optimize surgical planning for this vulnerable ...

Technique options that should be considered for the less common anterior radial tears of the lateral meniscus include outside-in repair, self-capturing suture-passing devices, and orthobiologic treatments to stimulate healing. Although a variety of suture techniques, including the double horizontal mattress and horizontal butterfly patterns ...