Posterior-Only Approach for the Correction of Severe Post-tubercular Kyphosis

Tuberculosis of the vertebral column (Pott's disease) accounts for up to one-half of musculoskeletal tuberculous infections. The eradication of the infective organism ( Mycobacterium tuberculosis ) is achievable with chemotherapy. However, such patients with spinal tuberculosis are at risk of developing spinal deformity, and 3%-5% of the patients develop severe deformity greater than 60°. A 30-year-old female presented with back pain of 11 years, discharging sinus, and progressively worsening kyphotic deformity of eight-year duration. She had completed a full course of anti-tubercular chemotherapy. Her neurological examination was within normal limits. Antero-posterior and lateral view radiographs showed osteolytic destruction and collapsed T12 and L1 vertebrae with a thoracic kyphosis of 90°. We did a single-stage posterior-approach closing-opening osteotomy surgery utilizing costotransversectomy (T12 and L1 corpectomy, the insertion of expandable titanium cage, T10 to L3 pedicle screw, and rod fusion). Postoperative kyphosis was 25°. Her motor and sensory functions remained preserved following surgery. The duration of follow-up was 18 months post operation. The mainstay of treatment of severe post-tubercular kyphosis (PTK) is surgery. The correction is complex and could be staged or with multiple approaches and consequent high risk of complications. A single-stage posterior-approach surgery is less invasive.