Figure 5
From: Stereotactic topography of the greater and third occipital nerves and its clinical implication
The overall course of the greater occipital nerve (GON) and third occipital nerve (3ON) with horizontal distances (arrows) between their emergences (a~f) from the back muscles and the midline. The blue dots mean the emergences of GON from trapezius (a), semispinalis capitis (b) and occipital capitis inferior (c), and the emergences of 3ON from trapezius (d), splenius capitis (e) and semispinalis capitis (f). All numbers are presented in millimetre. external occipital protuberance, EOP; mastoid process (lowermost point), MP.
