Kinematic magnetic resonance imaging of the effect of bracing on patellar position: qualitative assessment using an extremity magnetic resonance system.
Year: 2000
Type: article
Abstract: OBJECTIVE: To use an extremity magnetic resonance system to perform kinematic magnetic resonance imaging (MRI) of the patellofemoral joint to qualitatively assess the effect of bracing on patellar position. DESIGN AND SETTING: Subjects underwent kinematic MRI of the symptomatic extremity with a 0.2-Tesla extremity magnetic resonance system. Images were obtained using a knee coil and a T1-weighted, spin echo pulse sequence. SUBJECTS: Seven female patients with patellofemoral joint symptoms. MEASUREMENTS: FOUR DIFFERENT AXIAL SECTIONS WERE OBTAINED FOR EACH POSITION: extension and 3 positions of flexion up to 36 degrees . An appropriate-sized patellofemoral brace was applied, and the kinematic MRI procedure was repeated. RESULTS: Six patients had lateral displacement of the patella, and 1 patient had medial displacement of the patella. After application of the brace, 6 patients (5 with lateral displacement and 1 with medial displacement, 86%) exhibited correction (5) or improvement (1 with lateral displacement) in the abnormal patellar positions, and 1 patient had worsening of the abnormal position of the patella. CONCLUSIONS: We used kinematic MRI to determine the presence of abnormal patellar positioning. Application of the brace counteracted the abnormal patellar positions in most of the patients studied.
Source: Europe PMC (PubMed Central)
Authors: F G Shellock, M Mullin, K R Stone, M Coleman, J V Crues
Institution: University of Southern California
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2410062172