@spineinsiders: The Hidden Risk Years After an L4-S1 Spine Fracture A lower spine fracture at L4-L5 or L5-S1 can quietly lead to Spondylolisthesis years after healing. As structural stability weakens over time, the vertebra slowly slides forward, causing late-onset back stiffness, pain, or nerve compression down the leg. This is why long-term follow-up imaging is essential for your spine health. #SpineHealth #Spondylolisthesis #LumbarSpine #BackPain #SpineFracture