Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Radiograph showing Gilula’s arcs. Three smooth arcs normally outline proximal (arc I) and distal (arc II) cortical margins of the proximal carpal row and proximal carpal surfaces (arc III) of the hamate and capitate are shown in a posteroanterior view of the wrist
