Slovak to English Medical Medical (general) Head wound, child

A bit more on this 'test' - more esoteric than the real medical reports I work on! The phrase in question is Latin - Wound Loco citato (located) in the head region left side' But what is 'F'? Any clues? I haven't seen it before and single letters are often hard to locate by research.
Background: medical report diagnosis about a child who ran into a door. He's okay!