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Surgeons successfully fused four vertebrae in Brian Livengood’s back Friday, and he is off a respirator.

Livengood broke two vertebrae when he crashed and slid into a concrete wall at Road Atlanta during AMA Superbike Qualifying on Friday, May 17. He also suffered a concussion and bruised lungs in the incident, and was on a respirator through the start of his surgery.

The crash was set off when the rear tire on Livengood’s GSX-R1000 came apart approaching the back-straight kink at Road Atlanta.