Henriques and Burns were knocked unconscious as they collided while going for a chance in a Twenty20 match away to Sussex at Arundel on England`s south coast.
All-rounder Henriques broke his jaw in three places after he was struck by Burns`s knee. Burns sustained head and facial injuries.
Both players needed oxygen treatment and three ambulances were called on to the outfield before the pair, who regained consciousness before leaving the ground,