title: Inter- and intratester reliability of radiographic measurements of spondylolisthesis.
abstract: Thirteen radiographic methods to measure spondylolisthesis were assessed to determine: 1. whether or not the different methods were correlated with each other; 2. their precision in detecting vertebral displacements; 3. inter- and intra-measurer reliability among six orthopedic surgeons performing radiographic measurements. Several methods were found to be correlated with each other in detecting spondylolisthesis on radiographs. However, on simulated displacements only three of them showed good correlation (r greater than or equal to 0.95, p less than 0.01). Intra- and intergroup correlations among the orthopedic surgeons were equally good (r greater than 0.90; p less than 0.01).
authors.affiliation: University of Naples, First Medical School, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Capasso
authors.forename: N
authors.initials: N
authors.lastname: Maffulli
authors.forename: V
authors.initials: V
authors.lastname: Testa
mesh_terms: D006801:Humans; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging* / Q000473:pathology; D008161:Lumbosacral Region / Q000000981:diagnostic imaging; D015588:Observer Variation; D009985:Orthopedics; D011859:Radiography; D013168:Spondylolisthesis / Q000000981:diagnostic imaging* / Q000473:pathology