Cervicodorsal spine tuberculosis-- surgical approach.

BACKGROUND: Tuberculosis (TB) of CT junction is uncommon (5 % of all spinal TB), and difficult to approach surgically in view of its deep location with sternum in front and scapula in the back. We present 7 consecutively treated cases of cervico-thoraccic TB for outcome of treatment and discuss rationale of choosing surgical approach.

METHODS: Present study includes 7 freshly diagnosed cases of CT junction TB. Plain radiographs, sagittal reconstruction of CT spine that included sternum on CT/MRI was performed in all cases. Disc space below the distal healthy vertebrae was identified and a line parallel to disc space was drawn. If this line passes above suprasternal notch, it was inferred that this VB can be accessed by anterior cervical approach. If disease focus was at or below suprasternal notch level, manubriotomy/sternotomy was added for better visualization of the lesion.

RESULTS: All seven cases were female, with mean age of 20 years (9-45 years). The vertebral lesion involved 2VB (n = 3), 3VB (n = 2) and >3 VB (n = 2). The average Cervico-thoracic kyphosis was 15° (range 10-25°). All 7 cases were operated for anterior decompression, kyphotic deformity correction and instrumented stabilization. Anterior cervical approach and manubriotomy/sternotomy approach was performed in three cases each. In two pan-vertebral cases we performed 360° procedure. Six cases have shown first sign of neural recovery within 3 weeks of surgery and almost complete neural recovery at 3 months follow-up while one case showed partial recovery. ATT was stopped after 12 months once healed stage was demonstrated on contrast MRI in all.

CONCLUSIONS: CT junction TB usually presents with severe kyphotic deformity/neural deficit. These cases require anterior decompression/corpectomy, deformity correction, gap grafting and instrumented stabilization with anterior cervical plate. Lesion with pan-vertebral disease is stabilized 360°. These lesions can be decompressed by lower anterior cervical approach with/without manubriotomy. The Karikari method was useful in deciding the need for manubriotomy to decompress the lesion.