title: An in vivo analysis of the motion of the peri-talar joint complex based on MR imaging.
abstract: The purpose of this work is to characterize the three-dimensional (3-D) motion of the peritalar joint complex in vivo using magnetic resonance imaging (MRI). Each image data set utilized in this study is made of 60 longitudinal MR slices of the foot in each of eight positions from extreme pronation to extreme supination. We acquired and analyzed ten such data sets from normal subjects, seven data sets from pathological joints and two postoperative data sets. We segmented and formed the surfaces of the calcaneus, talus, cuboid and navicular from all data sets. About 30 geometrical parameters are computed for each joint in each position. The results present features of normal motion and show how normal and abnormal motion can be distinguished. They also show the consequences of surgery on the motion. This non- invasive method offers a unique tool to characterize and quantify the 3-D motion of the rearfoot in vivo from MR images.
authors: Laboratoire de Traitement de l'Information Médicale Laboratoire d'anatomie, Centre Hospitalo-Universitaire de Brest, Université de Bretagne Occidentale, France.
authors: E
authors: E
authors: Stindel
authors: J K
authors: JK
authors: Udupa
authors: B E
authors: BE
authors: Hirsch
authors: D
authors: D
authors: Odhner
mesh_terms: D000328:Adult; D000843:Ankle Joint / Q000502:physiology* / Q000503:physiopathology; D001696:Biomechanical Phenomena; D005530:Foot Deformities / Q000175:diagnosis / Q000503:physiopathology*; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D008279:Magnetic Resonance Imaging; D011403:Pronation / Q000502:physiology; D016059:Range of Motion, Articular / Q000502:physiology*; D012016:Reference Values; D013484:Supination / Q000502:physiology