Now, on the posterior side, you find, as well, another line, letâs say, but this time called the intertrochanteric crest that is also between the neck of the femur and the shaft and runs, as well, from the greater trochanter all the way down to the lesser trochanter.
The upper back has the most structural support, with the ribs attached firmly to each level of the thoracic spine and very limited movement. The lower back (lumbar vertebrae) allows for flexibility and movement in back bending (extension) and forward bending (flexion).
The medial nerves are uniquely located in each segment of the spine: 1  Cervical medial branch nerves are located in a bony groove in the neck. 2  Thoracic medial branch nerves are located over a bone in the mid-back or upper back.3  Lumbosacral medial branch nerves are found in a bony groove in the low back. Cervical medial branch nerves are located in a bony groove in the neck. 2  Thoracic medial branch nerves are located over a bone in the mid-back or upper back. 3  Lumbosacral medial branch nerves are found in a bony groove in the low back. 4  See Spinal Cord and Spinal Nerve Roots.