The vertebrae in the lower back are called the Lumbar vertebrae. They are L1, L2, L3, L4 and L5.
Calf (the lower-back part of your leg)
Lower Phalanges
Lower Phalanges
The tarsals, as well as the lower regions of the tibias and fibulas.
Temporal
radius and ulna.
The five bones fused in the lower back are called the sacrum. The sacrum is a triangular bone located between the two hip bones and forms the back part of the pelvis. It is made up of five separate vertebrae that fuse together during development.
In the small of your back (lower) more or less level with the tops of your hip bones.
The bones of the lower limb from superior to inferior are the femur (thigh bone), patella (kneecap), tibia and fibula (lower leg bones), tarsal bones (ankle bones), metatarsal bones (foot bones), and phalanges (toe bones).
Spine, or Vertebrae. I think that is how you spell it.
Exoskeletons
The bones of the mid and upper back are the thoracic vertebrae. The neckbones are the cervical vertebrate and the lower back bones are the lumbar vertebrae.