Did you know 1 in 10 people don’t have a ‘normal’ lumbar spine? About 10% of the population has what’s called a transitional vertebra in the lower back, and most people have no idea they have it. Normally, the spine has five movable lumbar vertebrae. But in this group, development happens differently 👇 • Some people have L5 fused to the sacrum → this is called sacralization • Others have S1 acting like an extra lumbar → this is called lumbarization Each pattern changes how the spine moves, how

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