L Yao1, A Gentili, A Cracchiolo. 1. Department of Radiology, MRI, Georgetown University Medical Center, Washington, DC 20007-2197, USA.
Abstract
OBJECTIVE: Spring ligament insufficiency is associated with chronic posterior tibial tendon dysfunction, and may constitute an indication for surgical repair or reconstruction. This study examines the accuracy of MRI for the diagnosis of insufficiency of the spring ligament. DESIGN AND PATIENTS: Two experienced musculoskeletal radiologists independently scored the MRI findings in 13 cases of surgically proven spring ligament insufficiency and in 18 control subjects, using a standardized scoring system. RESULTS: Insufficiency of the spring ligament was associated with increased signal heterogeneity on short TE spin echo images, and an increase in the thickness of the medial portion of the ligament. The sensitivity of MRI for the diagnosis of spring ligament insufficiency was 54-77%, while the specificity was 100%. MRI assessment of the plantar portion of the spring ligament was unreliable (kappa=0.33), but the assessment of global ligament integrity was substantially reproducible (kappa=0.76). CONCLUSION: The medial portion of the spring ligament can be reliably assessed on routine MRI. The findings of spring ligament insufficiency on MRI are only moderately sensitive but highly specific.
OBJECTIVE: Spring ligament insufficiency is associated with chronic posterior tibial tendon dysfunction, and may constitute an indication for surgical repair or reconstruction. This study examines the accuracy of MRI for the diagnosis of insufficiency of the spring ligament. DESIGN AND PATIENTS: Two experienced musculoskeletal radiologists independently scored the MRI findings in 13 cases of surgically proven spring ligament insufficiency and in 18 control subjects, using a standardized scoring system. RESULTS:Insufficiency of the spring ligament was associated with increased signal heterogeneity on short TE spin echo images, and an increase in the thickness of the medial portion of the ligament. The sensitivity of MRI for the diagnosis of spring ligament insufficiency was 54-77%, while the specificity was 100%. MRI assessment of the plantar portion of the spring ligament was unreliable (kappa=0.33), but the assessment of global ligament integrity was substantially reproducible (kappa=0.76). CONCLUSION: The medial portion of the spring ligament can be reliably assessed on routine MRI. The findings of spring ligament insufficiency on MRI are only moderately sensitive but highly specific.
Authors: Srinivasan Harish; Edgar Jan; Karen Finlay; Brad Petrisor; Terry Popowich; Lawrence Friedman; Bruce Wainman; Erik Jurriaans Journal: Skeletal Radiol Date: 2006-11-30 Impact factor: 2.199
Authors: Matthias Braito; Martina Wöß; Benjamin Henninger; Michael Schocke; Michael Liebensteiner; Dennis Huber; Martin Krismer; Rainer Biedermann Journal: Springerplus Date: 2016-08-24