Flatback is an alignment problem. Treating the pain without restoring lordosis leaves the patient leaning forward. Revision plans often combine anterior column lengthening (ALIF) with posterior osteotomies when needed.
Dr. Li’s clinical research includes how ALIF versus TLIF restores the lordosis distribution index and how that relates to proximal failure — the kind of detail that separates a durable reconstruction from a short-lived one.