The circumference or thickness of the ulna bone, which is one of the two long bones in the forearm.

अल्ना (कुहनी की हड्डी) की परिधि या मोटाई

English Usage: The doctor measured the girth of ulna during the examination.

Hindi Usage: डॉक्टर ने परीक्षण के दौरान अल्ना की परिधि मापी।