Posterior transdiscal three-column shortening in the surgical treatment of vertebral discitis/osteomyelitis with collapse.

STUDY DESIGN

Retrospective review of consecutive case series.

OBJECTIVE

To evaluate the early surgical results and complications of thoracic transdiscal osteotomies and vertebral shortening for the treatment of thoracic discitis/osteomyelitis.

SUMMARY OF BACKGROUND DATA

Thoracic discitis/osteomyelitis leads to collapse of the disc space and/or vertebral body. We propose a novel technique to achieve the same goals as anterior column reconstruction through an entirely posterior approach. Shortening of the vertebral column provides structural support without the morbidity of an anterior approach.

METHODS

Following REB approval, retrospective review of the charts of five patients that underwent posterior only thoracic transdiscal osteotomies and vertebral shortening for discitis/osteomyelitis was carried out. Posterior only surgery was performed in these patients with excision of the affected disc space and corresponding posterior elements. Instrumented fusion was performed across the segment spanning multiple vertebral levels. Clinical outcome, radiographic correction, and perioperative complications were analyzed.

RESULTS

Three patients had bacterial discitis, and 2 had tuberculosis. Mean age at the time of surgery was 61 years (50-76). Mean follow-up was 45 months (25-63). There was no neurologic deterioration; 2 patients with Frankel grade B improved to grade D and E, respectively. Mean kyphosis corrected from 36 degrees (14-90) to 4 degrees (0-8), and the mean construct spanned 9 levels (6-15). No major complications were encountered during surgery. Two patients underwent revision surgeries, 1 patient died of unrelated causes at 6 months. All patients were treated with a full course of postoperative antibiotic treatment. No cases of recurrent infection were recorded.

CONCLUSION

Thoracic transdiscal osteotomy with vertebral shortening is a safe and effective option for the treatment of infectious discitis/osteomyelitis with associated kyphosis. With adjuvant antibiotics, it effectively eradicates the infection through a posterior only approach, avoiding the need for anterior procedures and long anterior struts.