METHOD FOR MAGNETIC RESONANCE IMAGING AND DYNAMIC ULTRASONIC DIAGNOSTICS OF A PATHOLOGY OF THE MEDIOPATELLAR PLICA OF THE KNEE JOINT Russian patent published in 2021 - IPC A61B5/55 A61B8/00 

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to traumatology and orthopedics, and can be used for dynamic ultrasonic diagnostics of a pathology of the mediopatellar plica of the knee joint. The patient's knee joint of concern is examined using a magnetic resonance imaging apparatus with an amplitude along each axis of 45 mt/m, using slices in the amount of 1024 and a 5 mcm resolution in the scanning plane. The presence and type of pathology of the mediopatellar plica of the knee joint is determined according to the Sakakibara classification. The knee joint is examined using a linear sensor with an examination frequency of 7 to 12 MHz with the patient in the dorsal position with an extended lower limb with the knee joint of concern. A linear ultrasonic sensor is placed on the medial surface of the patellofemoral joint, and dynamic ultrasonic examination is performed while the patient is bending and unbending the lower limb in the knee joint of concern. The image of the excursion of the altered mediopatellar plica and insertion thereof into the medial patellofemoral joint is analysed on the monitor screen. If a fibrous cord is visualised along the anteromedial surface of the knee joint, differentiating from the capsule located along the medial femoral condyle with a downslope of a non-uniform thickness from 2.1 mm to 5.3 mm, heterogeneous structure and increased echogenicity, the results of diagnostics of the mediopatellar plica are confirmed using magnetic resonance imaging. If insertion of the altered mediopatellar synovial plica is visualised laterally to the area of contact of the articular surfaces, impaction of the mediopatellar plica is diagnosed. If increased hydration, uneven contour and local erosion of the articular cartilage of the anteromedial surface of the medial femoral condyle is visualised, Shelf syndrome of the medial femoral condyle is diagnosed. If increased hydration and uneven contour of the patellar articular cartilage is visualised, patellar chondromalacia is diagnosed. If increased vascularisation of the mediopatellar plica, articular capsule and Hoffa fat pad over the anteromedial surface, an exacerbation of the mediopatellar plica syndrome is diagnosed. If thickening of the synovial membrane whereto the mediopatellar plica is attached is visualised in the anteromedial joint, local synovitis is diagnosed.

EFFECT: method provides highly informative diagnostics of a pathology of the mediopatellar plica of the knee joint by visualisation of the anatomical structures in the anteromedial joint.

1 cl, 3 ex