[Sonographic fracture diagnostics].

BACKGROUND: In clinically suspected fractures taking radiographs is the standard procedure but the indications should be strictly limited. Ultrasound offers a safe and radiation-free alternative for fracture diagnostics.

OBJECTIVES: Sensitivity and specificity of sonographic fracture diagnostics and safety of sonographic algorithms for fracture evaluation.

METHODS: Presentation of useful applications for sonographic fracture evaluation and establishment of sonographic algorithms for safe fracture diagnosis.

RESULTS: In children distal forearm fractures can be diagnosed solely by ultrasound (sensitivity 96 % and specificity 97 %). The sonographic fat pad sign (SOFA) has been proven to be a useful primary screening tool for occult fractures of the pediatric elbow. A positive fat pad sign (SOFA+) is indicative of a fracture and radiographic diagnostics are necessary (sensitivity 97 % and specificity 91 %). Ultrasonography is also useful to exclude subcapital humeral fractures (sensitivity 94 % and specificity 100 %) and for correct estimation of displacement when present.

CONCLUSIONS: Sonographic algorithms for fracture evaluation (SAFE) offer a safe diagnosis and guidance of the therapeutic course of certain pediatric fractures, thereby reducing unnecessary radiation exposure.