title: [Roentgenographic stereogrammetric analysis after total knee arthroplasty].
abstract: In 1974 Selvik introduced marker-based roentgenographic stereogrammetric analysis (RSA), a highly accurate technique for measuring three-dimensional migration of orthopaedic implants. Novel, promising, user-friendly, fast and in some cases noninvasive RSA techniques (model-based RSA, image-based RSA and fluoroscopic RSA) have been developed, and some have recently been validated. However, the most reliable RSA technique so far is marker-based RSA. A standardization protocol for RSA studies is required. In the future, implant-testing using RSA should be used routinely in selected Danish orthopaedic units.
authors.affiliation: Ortopaedkirurgisk Klinik 2161, Rigshospitalet, DK-2100 København Ø. m.therbo@tdcspace.dk
authors.forename: Matthias
authors.initials: M
authors.lastname: Therbo
authors.forename: Bjarne
authors.initials: B
authors.lastname: Lund
mesh_terms: D019645:Arthroplasty, Replacement, Knee; D005471:Fluoroscopy; D006801:Humans; D021621:Imaging, Three-Dimensional; D007720:Knee Prosthesis; D008954:Models, Biological; D010780:Photogrammetry / Q000379:methods* / Q000592:standards; D011857:Radiographic Image Interpretation, Computer-Assisted; D012680:Sensitivity and Specificity