How is discoid meniscus diagnosed?
An X-ray is often the first indicator of a malformed cartilage, allowing Dr. Vidal to see variations in the knee joint such as a widened lateral joint space. Flatter than normal bones or squaring of the lateral femoral condyle is also a good indication seen in simple x-rays. Dr. Vidal will confirm the diagnosis with an MRI scan which helps him to more clearly define the exact shape of the meniscus as well as where it may be torn or injured.
It is important to note the MRI can show the abnormal shape of the discoid meniscus, as well as tears within the meniscus. However, the rare Wrisberg type of discoid meniscus cannot be detected with an MRI because the problem only occurs when the patient is moving. For this reason, it is important to consult with a physician like Dr. Vidal who has experience in diagnosing and treating a Wrisberg discoid meniscus.