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The American Journal of Sports Medicine 27:350-353 (1999)
© 1999 American Orthopaedic Society for Sports Medicine

Effect of a Patellar Realignment Brace on Patients with Patellar Subluxation and Dislocation

Evaluation with Kinematic Magnetic Resonance Imaging

Claus Muhle, MD*,{dagger},{ddagger}, Gisbert Brinkmann, MD*, Abdalla Skaf, MD{ddagger}, Martin Heller, MD* and Donald Resnick, MD{ddagger}

* Department of Diagnostic Radiology, Christian-Albrechts-University Kiel, Kiel, Germany
{ddagger} Department of Radiology, Veterans Affairs Medical Center, San Diego, California

{dagger} Address correspondence and reprint requests to Claus Muhle, MD, Department of Diagnostic Radiology, Christian-Albrechts-University Kiel, Arnold-Heller-Strasse 9, 24105 Kiel, Germany

The object of this study was to evaluate the effect of a patellar realignment brace on patients with patellar subluxation or dislocation. Twenty-one patients (24 patellofemoral joints) with clinical evidence of patellar subluxation (N = 16) or dislocation (N = 5) were examined with the joint inside a positioning device to allow active-motion, kinematic magnetic resonance imaging. To analyze the patellar tracking pattern, the same imaging parameters (patellar tilt angle, bisect offset, and lateral patellar displacement) and section locations were used before and after application of a patellar realignment brace. No statistically significant differences were found in any of the three parameters for the patellofemoral relationships before or after wearing the patellar brace. The results indicated no stabilizing effect of the tested brace in patients with patellar subluxation or dislocation during active joint motion.




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