What is the most common injured area in the lower back?
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The most common injured area in the back is L4-S1 for the following reasons:
1-The Posterior longitudinal ligament is thinner and weaker then the ALL
2-The annulus is weaker posteriorly
3-The discs between L4-S1 are situated more posteriorly and lateral biomechanically
These are the reasons based on the evidenced based research and science that I have learned