Two teenagers have been arrested following a September assault in Aylesbury.
The victim, a 43-year-old man, was walking in Bedwyn Walk at about 4pm on Thursday 22 September last year.
He was then approached by a group of four males who assaulted him.
A 16-year-old boy and an 18-year-old man, both from Aylesbury, have been arrested on suspicion of inflicting grievous bodily harm with intent.
They have both been released on police bail until 5 March while the investigation continues.
The victim sustained multiple fractures to his head, including a fractured eye socket, a fractured jaw and a fractured cheek bone. He was treated at Stoke Mandeville Hospital but has since been discharged.