Imaging the position of a screw within the scaphoid. A clinical, anatomical and radiological study.
In an audit of 68 scaphoid fractures with delayed and non-union that had been internally fixed using the Herbert bone screw, it was found that 39 had a significant fault in screw position. Poor intra-operative imaging was a major contributing factor. An anatomical and radiological study was therefore performed to evaluate which views were necessary in order to be confident about screw position. We recommend a minimum of four views. To display the proximal pole, an ulnar deviated postero-anterior (PA) view and true lateral; and to display the distal pole, a semi-pronated and semi-supinated view.
Compson
J P
JP
Orthopaedic Academic Unit, St Thomas's Hospital, London, UK.
Heatley
F W
FW
D001863:Bone Screws; D002348:Carpal Bones / Q000000981:diagnostic imaging* / Q000293:injuries; D050723:Fractures, Bone / Q000000981:diagnostic imaging; D005599:Fractures, Ununited / Q000000981:diagnostic imaging; D006801:Humans; D011859:Radiography