[Radiologic determination of bone screw exit site on the femoral condyle. A method of exact imaging and length determination of internal fixation devices (screws, K-wires) in metaphyses of larger tubular bones exemplified by the distal femur].
Distal femur imaging (A-P and lateral X-rays) after internal fixation often give only poor visualization of the exact position. A model with two anteriorly positioned cortex screws was used to show that an additional oblique X-ray, or fluoroscopy of the tip of the screw, allows much more exact determination of its length, so that it can be changed if necessary. This method is considered by the authors as a simple check of screw length measurement in "foyer fermée" procedures.
Landes
C
C
Department of Orthopedic Surgery, University of Louisville, Kentucky.
Mehta
S
S
Seligson
D
D
D000293:Adolescent; D001863:Bone Screws; D001864:Bone Wires; D005269:Femur / Q000000981:diagnostic imaging*; D005593:Fracture Fixation, Internal / Q000295:instrumentation*; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging; D008953:Models, Anatomic; D011183:Postoperative Complications / Q000000981:diagnostic imaging; D011859:Radiography
Die radiologische Bestimmung der Schraubenaustrittsstelle am Femurkondylus. Eine Methode der exakten Darstellung und Längenbestimmung von internen Fixierungen (Schrauben, K-Drähte) an Metaphysen grösserer Röhrenknochen am Beispiel des distalen Femurs.