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Fig. 1 | BMC Musculoskeletal Disorders

Fig. 1

From: Treatment of ankylosing spondylitis complicated with a thoracolumbar Andersson lesion by posterior closed osteotomy, debridement and fusion through the fracture line

Fig. 1

A 52-year-old male patient, diagnosed with AS combined with T10/11 AL. a Preoperative full length anteroposterior radiograph of spine. b Preoperative full length lateral radiograph of spine showed excessive thoracic kyphosis and a T10/11 intervertebral fracture line. c, d Preoperative CT sagittal view and cross section showed T10/11 intervertebral space involving a three-column fracture and a visible vacuum sign. e Preoperative MRI showed a low signal on T10/11 intervertebral space T2WI; f The osteotomy gap exposed through the fracture line during the operation. g Full length anteroposterior radiographs of the spine 18 months after surgery. h Full-length lateral spinal radiographs 18 months after surgery showed normal thoracic kyphosis, and a titanium cage was inserted into the T10/11 intervertebral space. i, j Sagittal and cross - sectional CT images at 18 months postoperatively showed intervertebral fusion with the bone graft

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