FIGURE 3.
The spinal dorsal ramus and the fibro-osseous canal. (1) Dorsal ramus. (2) Lateral branch of the dorsal ramus. (3) Medial branch of the dorsal ramus. (4) Mammillary process. (5) Accessary process. (6) Mammilloaccessory ligament. (7) L2 transverse process. (8) L1 transverse process.