Modified carpal box technique in the diagnosis of suspected scaphoid fractures

Toth, F.; Mester, S.; Cseh, G.; Bener, A.; Nyarady, J.; Lovasz, G.
May 2003
Acta Radiologica;May2003, Vol. 44 Issue 3, p319
Academic Journal
journal article
Purpose: To establish and test the clinical efficacy of a new diagnostic algorithm with the extensive utilization of modified carpal box radiography (mX-CB) in the detection of scaphoid fractures. Material and Methods: Initial and early follow-up radiographic evaluation of 146 suspected scaphoid fractures were carried out by mX-CB. Patients with unconfirmed diagnosis were referred to CT. Patients were followed for 1 year after injury. Sensitivity, specificity and interobserver agreement of reading mX-CB images were determined statistically. Results: No non-union or avascular necrosis was seen at 1 year after the injury. 90% of the fractures were diagnosed by mX-CB, only 6.8% of the patients needed referral to CT. Sensitivity of mX-CB at initial presentation was 81.6%. Interobserver agreement was very high among evaluators of mX-CB images. Conclusion: Extensive utilization of mX-CB as primary and early follow-up investigation resulted in high initial diagnostic accuracy and low referral rate to a more expensive diagnostic modality.


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