Abstract: Intramedullary nails are provided for the fixation of epiphyseal fragments in a long bone of a patient in need thereof. The intramedullary nails have a cap portion that allows for fixation of the epiphyseal bone fragments thereto, and an intramedullary shaft for insertion into the medullary canal of the long bone. The intramedullary nails can provide for fixation of comminuted fractures that are difficult to treat with conventional methods. In some aspects, the patient is a human patient and the fracture is a Mason type II radial head fracture or a Mason type III radial head fracture. Methods of fixation of epiphyseal fractures using the intramedullary nails of the present disclosure are also described.