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Fig. 1 | Journal of Orthopaedic Surgery and Research

Fig. 1

From: Can pelvic tilt be restored by spinal osteotomy in ankylosing spondylitis patients with thoracolumbar kyphosis? A minimum follow-up of 2 years

Fig. 1

A 36-year-old men with ankylosing spondylitis with cervical ankylosis. a Preoperatively, PI and PT were 35° and 28°, respectively. tPT = 0.37 × 35° − 7° = 5.95°. b An interrupt-two-level osteotomy was adopted on T12 and L2, and the spine was fused from T9 to L5. PI and PT were 35° and 8°, respectively. c However, the postoperative CBVA was 16° upward and the patient was not able to look straight

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