Overall, sacral vertebrae problems are not common in horses. However, it is possible for the sacral vertebrae to become fractured, dislocated or infected, all of which can compress the pelvic limb spinal nerves that run through the sacral vertebrae.
kyphosis, lordosis and scoliosis
The median sacral crest on the sacrum is a bony ridge formed by fusion of sacral vertebrae, indicating where the individual vertebrae once were. In contrast, the median sacral crest on lumbar vertebrae does not exist, as lumbar vertebrae do not fuse in the same way as sacral vertebrae.
Six
21
The lumbar vertebrae come next, followed by the sacral.
the sacral vertebrae, and think it's 4 to 5 that are fused together
sacrum and coccyx
A sacral vertebra is one of the bones in the spine located in the lower back, just below the lumbar vertebrae. There are typically five sacral vertebrae that are fused together to form the sacrum, which connects the spine to the hip bones. The sacral vertebrae play a role in supporting the weight of the body and protecting the spinal cord.
A typical horse has around 54 to 60 vertebrae in its spine. This includes 7 cervical vertebrae (neck), 18 thoracic vertebrae (chest), 6 lumbar vertebrae (lower back), 5 sacral vertebrae (pelvis), and 16-18 coccygeal vertebrae (tail). The exact number can vary slightly among individual horses.
sacral hiatus
The five types of vertebra are the:cervical vertebrae (neck)thoracic vertebrae (chest)lumbar vertebrae (back)sacral (pelvis)coccyx (tailbone)
There are Five different types of Vertebrae in the Vertabral collumn (spine).1) Cervical Vertebrae (7)2) Thoracic Vertebrae (12)3) Lumbar Vertebrae (5)4) Sacral Vertebrae (5)5) Coccygeal Vertebrae (3)