‘Buckwild’ Star Anna Davis — Head SLAMMED By Metal Lighting Rig

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Buckwild” star Anna Davis got the crap smacked out her this week in Kentucky … by a MASSIVE pole covered in strobe lights — and our sources obtained the nerve-wracking video.

The smackdown happened at Whiskey Barrel Bar and Dance Thursday night in Richmond — where Anna was hosting an event alongside the DJ … and the rig above collapsed.

It”s unclear why the structure fell — but Anna says her neck, back and head have been “throbbing” since … and she plans to see a doctor if the pain persists.

Calls to Whiskey Barrel went unanswered.