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Home/Spine/The 6.5 mm Rule Every Spine Surgeon Should Know
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The 6.5 mm Rule Every Spine Surgeon Should Know

October 22, 2025 1 min read Premium comments

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The 6.5 mm Rule Every Spine Surgeon Should Know
Source: Wikimedia Commons and Nevitt Dilmen
StudiesGlobal Spine JournalPremiumSpine Surgerypedicle screwsupper instrumented vertebra

Two kinds of patients can keep you up at night: ones who sneezed too hard and got a screw pullout—and those who come back at 3 months with a broken upper instrumented vertebra. Sound familiar?

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