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Lumbosacral Joint (L5-S1): Anatomy and Pain Symptoms
The sacrum and the coccyx each consist of multiple bones that fuse over time. L5-S1 consists of the last bone in the lumbar ...
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What is the spine?
There are 5 sacral vertebrae, which are fused as one bone and known as the sacrum, in the sacral region. There are 3 to 5 coccygeal vertebrae, which are fused as one bone and known as the coccyx ...