Case Follow-Up: Severe Sagittal Malalignment Corrected with Pedicle Subtraction Osteotomy

This is the follow-up on a previously presented case of severe lumbar sagittal malalignment — a patient who had been living with progressive forward imbalance that significantly impaired her quality of life and ability to stand upright.

After comprehensive preoperative evaluation and medical optimization, the patient underwent posterior spinal instrumentation from T12 to S1/pelvis, with a transforaminal lumbar interbody fusion (TLIF) at L5-S1 and a pedicle subtraction osteotomy (PSO) at L5. The PSO allowed correction of the severe sagittal imbalance by removing a posterior and middle column wedge of bone at L5, enabling the spine to be repositioned into a balanced, upright alignment.

The results at long-term follow-up have been excellent. The patient is now able to stand upright comfortably — something she had not been able to do for decades. She has expressed significant gratitude for the outcome and remains neurologically intact with a solid fusion construct on imaging.

This case illustrates several important principles in adult spinal deformity surgery: the importance of addressing sagittal balance rather than coronal deformity alone, the role of three-column osteotomy in correcting fixed deformity, and the durability of well-executed reconstruction over the long term.

Post-operative X-ray showing T12-pelvis posterior spinal fusion with PSO at L5 and restored sagittal balance
Post-operative X-ray: T12-S1/pelvis posterior instrumented fusion with TLIF L5-S1 and PSO at L5, demonstrating restored sagittal balance.

Case presented for educational purposes with patient consent. This post does not constitute individualized medical advice. If you are experiencing difficulty standing upright or progressive spinal deformity, consult a qualified spine specialist.

About Dr. Zeeshan Sardar
Dr. Sardar, MD, MSc, F.R.C.S.C, is Co-Chief of Spinal Deformity Surgery at NewYork-Presbyterian / Columbia University, specializing in pedicle subtraction osteotomy, adult spinal deformity, and complex revision surgery. To schedule a consultation or second opinion, call 212-932-5187 or visit the contact page.

To schedule a consultation with Dr. Sardar, call 212-932-5187 or visit the contact page.

Published by Dr. Zeeshan Sardar, MD, MSc, F.R.C.S.C

Dr. Zeeshan Sardar is Co-Chief of Spinal Deformity Surgery, Director of Quality & Patient Safety, and Medical Director of the Spine Unit at Och Spine Hospital, NewYork-Presbyterian / Columbia University. Board-certified in orthopaedic surgery, he completed three spine fellowships — combined orthopedic and neurosurgical spine (Cedars-Sinai), artificial disc replacement (Texas Back Institute), and complex spinal deformity (Columbia) — and specializes in scoliosis, kyphosis, complex revision and Harrington rod revision surgery, and motion-preserving and robotic-assisted spine surgery. He is a member of the Scoliosis Research Society.

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