label: Cone-shaped epiphysis of the thumb
label_lc: cone-shaped epiphysis of the thumb
description: A cone-shaped appearance of the epiphyses of the thumb, producing a 'ball-in-a-socket' appearance. The related entity 'angel-shaped' epiphysis refers to a pronounced cone-shaped epiphysis in combination with a pseudoepiphysis at the distal end of a phalanx.