The influence of radiographic projection on the appearance of deformities.
In a series of 100 malunions and nonunions, the authors found, on average, that the worst deformity visualized radiographically underestimated the true deformity by 14% (range of 0% to 41.4%). By recomputing the analysis as though four views (anteroposterior, lateral, both 45% obliques) had been obtained, the visualization error was reduced from 14% to 2.5%. The authors recommended either obtaining the aforementioned four views when planning a complex deformity correction, or, better yet, obtain the radiographic projection that shows each deformity in profile.
Green
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SA
Problem Fracture Service, Rancho Los Amigos Medical Center, Downey, California.
Green
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HD
D003951:Diagnostic Errors; D017759:Fractures, Malunited / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D011859:Radiography