A man has been struck over the head with a plank of wood after a knife block was hurled at him during a fight in an inner Sydney unit.


Emergency services were called to Taylor Street, Darlinghurst, after reports a man had been assaulted about 8.30pm on Friday.


They found a 48-year-old man with cuts to his hand, torso and head.


It's believed the man had been involved in a fight with another man inside the unit, where a knife block was thrown at him and he was hit on the head with a plank.


He was taken to St Vincent's Hospital.


Police are appealing for anyone with information to come forward.


AAP