the disease factor of scapholunate dissociation scapholunate dissociation is the most common form of instability of the wrist its occurrence has been consistently attributed to previous trauma and is supposed to be treated by operation in the present paper we show that chronic bilateral scapholunate dissociation without any symptoms is not rare in two years we accidently found four cases with bilateral scapholunate dissociation in such cases an operation cannot be successful therefore we recommend that a specific trauma should be checked very carefully and roentgenograms of both wrists done infrahepatic interruption of the inferior vena cava with portal continuation asymptomatic infrahepatic interruption of the inferior vena cava with portal continuation is described the diagnosis was established by ultrasound and confirmed by inferior cavography and computed tomography hemodynamic studies showed portal hypertension due to increased blood flow through the liver