label: Bracket epiphysis of the 1st metacarpal
label_lc: bracket epiphysis of the 1st metacarpal
description: "An epiphysis that curves around from its transverse orientation to a longitudinal one from proximal to distal along one side of the phalanx, thus resembling the letter 'C' and forming a bracket around the diaphysis. This results in a so called delta phalanx characterized by a triangular or trapezoidal shaped bone with a C-shaped epiphyseal plate."