Figure 1

The normal aspect of the dorsal synovial recesses of the radio-carpal and midcarpal joints. a Drawing of the thin dorsal recesses of the radio-carpal (rc) and midcarpal (mc) joints, pointing distally. Lun = lunate bone; Cap = capitate bone. b, c Dorsal sagittal US scan showing a thin hypoechoic radio-carpal recess (b, arrow) without hyperemia on color Doppler examination (c).