Outcome of follow-up computed tomography of suspected occult scaphoid fracture after normal radiography.

PURPOSE

To evaluate the rate of missed scaphoid fractures on follow-up computed tomography (CT) for suspected occult scaphoid fracture after normal radiography with residual radial-sided wrist pain.

METHODS

In a retrospective analysis, wrist CT during a five-year period was analyzed. The CT examinations and radiological reports were re-evaluated. Available clinical findings and radiologic follow-up performed during a period of a minimum of three years served as outcome reference.

RESULTS

In total, 178 examinations had been performed on 174 patients for suspect scaphoid fracture, 67 men and 107 women, showing 15 and 6 scaphoid fractures, respectively; a statistically significant sex difference (p = 0.0024). In 157 examinations, no scaphoid fracture was detected on CT, instead 29 other wrist or carpal bone fractures were found. On follow-up, no missed scaphoid fractures were found. Before CT, 124 of the 157 patients had been treated with a cast. After CT, 35 patients continued with cast treatment for a median of 14 days.

CONCLUSIONS

CT appears to be a reliable method for evaluating suspect scaphoid fracture as part of a diagnosis-treatment regimen including pain immobilization with a plaster cast.