SURGICAL MANAGEMENT OF NON TUBERCULOUS SPONDYLODISCITIS OF THE LUMBAR SPINE

Abstract

Summary. Between January 2003 and October 2004,12 patients with non tuberculous spondylodiscitis were treated by radical debridment, reconstruction and stabilization. In our group 9 patients underwent posterior procedure and 3 underwent combined anterior and posterior procedures. 3 of these had fungal and 9 pyogenic infections. All the patients had appropriate antimicrobial therapy All patients had excellent to good functional results and no evidence of infection at 2 year follow-up.

Introduction. Surgical treatment of nontuberculous spon-dylodiscitis of lumbar spine is challenging due to extensive bone involvement and comorbid conditions. This study is to assess the role of radical debridment followed by reconstruction and stabilization of affected segments in reducing morbidity and mortality in these patients.

Methods. 12 consecutive patients were operated between January 2003 and October 2004. Patients presented with severe back pain, root compression or paraparesis.7 cases had prior spinal surgery. Blood and radiological investigations were diagnostic. All these patients underwent radical debridement, reconstruction and stabilization of affected segments done with titanium pedicular screws, titanium mesh cages, cancellous iliac crest graft. Only posterior procedure in 9 cases, combined anterior posterior in 3 cases followed by adequate and appropriate antimicrobials therapy. Follow-up ranged from 25 to 35 months.

Results: 3 cases were fungal and 9 were pyogenic infection. Oswestry low back questionnaire, kirkaldy-willis criteria showed dramatic improvement of function. All the blood parameters were normalized in 3 months.1 case had dural tear which was repaired immediately,3 cases had wound exploration and lavage. No major complications were encountered. All cases showed Radiological fusion at last follow-up.

Discussion: Radical debridement of necrotic material, decompression of neurological structures, create a good vascularised environment. Restoring stability compromised by either infection or prior surgery helps in healing process and reduces morbidity of patients

Significance: Reconstruction using pedicular system and interbody devices can safely be used in presence of non tuberculous infection provided debridement has been radical.