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General Orthopaedics

HIV/AIDS AND SPINAL TB

12th Combined Meeting of the Orthopaedic Associations (AAOS, AOA, AOA, BOA, COA, NZOA, SAOA)



Abstract

Introduction

The resurgence of TB worldwide has several underlying causes, but HIV infection has undoubtedly been a key factor in the current TB epidemic. Since TB is endemic in the developing world the influence of HIV is of concern, particularly with the emergence of multi-drug-resistant strains. The remarkable susceptibility of patients with AIDS to develop TB has shown the critical role of CD4 lymphocytes in protective immunity. In the absence of immunological surveillance by CD4 cells, 5-10% of persons with latent foci of TB reactivate each year.

Aim

This paper highlights the presentation and outcome following treatment in HIV patients with spinal TB.

Methods

81 HIV+ve patients with spinal tuberculosis were prospectively evaluated between 2006 and 2007. The mean age was 31 years and 63% were females. The thoracic spine was affected in 45, lumbar (33) and cervical (3). Non-contiguous lesions were noted in six patients. Sixty-six (81%) patients had neurological deficit. The mean Hb was (10.1gm/dl), mean WCC 4.9, mean lymphocyte count was 1.8, mean ESR 79mm/h and the mean CD4 count was 268 cell/cumm. Co-morbidities were seen in 68% of patients. All patients were optimised prior to treatment. Posterolateral decompression was performed in 29 cases, anterior decompression (25), needle biopsy (13), incision and drainage 5 and 9 were treated non-operatively. Medication included ARV (72 patients) and anti-TB in all patients.

Results

The mean follow-up was 21 months. Eleven (13.5%) patients developed wound infection and one child died. Complete recovery occurred in 23 patients (35%). The mean CD4 count was 341 cell/cumm.

Conclusion

The short term results are encouraging. These patients are best managed by a multidisciplinary team to monitor potential complications from dual therapy, to ensure compliance and adequate nutrition.