MRI for a torn inner meniscus | Torn meniscus

MRI for a torn inner meniscus

Far more frequent is the acute/fresh inner meniscus tear. In this case, MRI (magnetic resonance imaging) is considered to be the method of choice for imaging procedures in the case of an inner meniscus tear. With the help of MRI (or magnetic resonance imaging), the form and extent of an inner meniscus tear can be assessed more precisely.

The principle of MRI is based on the magnetic properties of individual atomic nuclei in our body, each of which has a certain characteristic angular momentum. The exact function is very complex – in simple terms, a computer can record and evaluate the impulses so that a three-dimensional image is ultimately produced. The MRI thus provides a 3D imaging method that can display meniscus tears in any spatial plane.

The MRI image offers the possibility of different image contrasts through the use of magnetic fields and radio waves. Depending on which tissue can be assessed, the MRI image is weighted. Even though MRI is the gold standard in the diagnosis of meniscus tears, CT (computed tomography) is still considered a possible alternative. This is an X-ray procedure (ionizing radiation), which in comparison to pure X-rays can also show soft tissue. In order to exclude a fracture of the bony structures as a concomitant injury of a meniscus lesion, the conventional X-ray image in 2 planes is recommended.

Therapy

There are two different procedures to treat a torn inner meniscus: Both surgical methods of the inner meniscus tear are usually largely free of symptoms after a few weeks. Subsequently, the knee joint is immobilized for a few days before further physiotherapeutic treatment is started.

  • Arthroscopic partial meniscectomy:The smallest possible part of the meniscus is removed.

    A minimally invasive surgical technique with very small skin incisions is chosen, using a camera and other instruments inserted through the skin incisions. It is essential that as little meniscal tissue as possible is removed, since the risk of later arthrosis, i.e. progressive wear and tear of the joint, is greater the more meniscal tissue is removed.

  • Meniscus suture: This second option is especially for younger people, but in principle, whenever possible, is the method of choice. The advantage of this method is obvious: the tear is sutured, so no meniscus tissue is removed and the risk of later arthrosis is kept as low as possible.