Where is s1 in your back?

The S1 vertebra, or sacral vertebra 1, is located at the base of the spine, forming part of the sacrum. It is situated just above the coccyx (tailbone) and below the lumbar vertebrae (L5). The S1 is crucial for pelvic stability and is connected to the pelvis via the sacroiliac joints. Its location plays a significant role in weight-bearing and movement of the lower body.