The great majority of cases occur in the lowest of the lumbar vertebrae (L5), but spondylolysis may also occur in the other lumbar vertebrae, as well as in the thoracic vertebrae.

The peak of this convexity is at the level of the third lumbar vertebra (L3).

And I put 100 million cells in his cisterna magna, in his lumbar cord, and filled out the IRBs and did all this work, and I never really knew.

Usually the hip (head of the femur), lower back (lumbar spine) or heel (calcaneum) are imaged, and the bone density (amount of calcium) is determined and given a number (a T score).

From a side view, the cervical (neck) region of the spine (C1 C7) is bent inward, the thoracic (upper back) region (T1 T12) bends outward, and the lumbar (lower back) region (L1 L5) bends inward.