Accuracy of digital radiography: regional scaling factors for trauma

ANZ Journal of Surgery
David DrynanMatthew P R Wilkinson

Abstract

Surgical planning in trauma is essential for optimal patient care and best patient outcomes. Digital radiography has improved the availability, convenience and access to radiographs worldwide as used in every trauma centre in Australia. One shortcoming, however, is the variability in magnification error associated with different anatomic regions. Accurate assessment of radiographs is paramount to proper surgical planning. A retrospective review of 513 post-operative trauma radiographs of implants at a single centre, collected from January 2015 to August 2016, was measured by the four individual investigators. A comparison of the digital calliper reading with the known implant size, taken from operation reports and company implant data, was conducted. Magnification scales were created for different anatomic regions: femur, tibia, humerus, elbow, wrist and hand, foot and ankle. Precise regional scaling factors increase accuracy of digital radiography. Average magnification for hand, wrist, ankle and forearm is 5% (1-16%). Average magnification for foot, knee, tibia and elbow is 8% (3-11%). Humerus magnification is 10.3% (3-17%) and shoulder and femur approximately 15% (12-18%). Inter-rater Pearson's R reliability testing is 0.985...Continue Reading

References

Aug 5, 2000·Journal of Orthopaedic Trauma·R P Colen, D W Prieskorn
Apr 2, 2002·The Journal of Bone and Joint Surgery. British Volume·K S ConnJ P Hallett
Jul 27, 2006·Orthopedics·Monet A FranceKenneth A Egol
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Nov 14, 2015·Journal of Clinical Orthopaedics and Trauma·Vignesh P KrishnamoorthyPradeep M Poonnoose

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Citations

Dec 18, 2019·Foot and Ankle Surgery : Official Journal of the European Society of Foot and Ankle Surgeons·Christian B ScheeleChristian Kinast
Sep 22, 2021·Veterinary and Comparative Orthopaedics and Traumatology : V.C.O.T·Julius KleverAndreas Brühschwein

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