Intraoperativ Testing of Scapholunate Instability in Radius Fracture

First, with an arthroCT of the wrist by intraarticular injection of contrast agent, a possible scaphulonary band lesion is detected. The surgeon does not yet know the findings of the possible ligament injury at this time, but he can assess the fracture in the CT. Subsequently, a dynamic functional test of the scapholunary distance is carried out intraoperatively under investigation with the modified Watson test before and after performing the osteosynthesis. For this purpose, the wrist is intraoperatively brought under pull on the thumb from a radial abduction into an ulnarabduction. In the presence of a scapholunary instability, a change in the distance of the scapholunary joint gap is shown here under illumination. Now the surgeon receives the finding of the Arthro-CT regarding an existing ligament injury. If necessary, this is treated in the same anaesthetic with a band seam and ossary transfixation.