Single-level Lumbar Pyogenic Spondylodiscitis Treated with Minimally Invasive Anterior Debridement and Fusion Combined with Posterior Fixation via Wiltse Approach

摘要

The effect and safety of anterior debridement and fusion with a minimally invasive approach combined with posterior fixation via the Wiltse approach were assessed in the single-level lumbar pyogenic spondylodiscitis. Seventeen patients from 2007 to 2009 underwent anterior debridement and fusion with a minimally invasive approach combined with posterior fixation via the Wiltse approach.Postoperative follow-up time was 24–41 months. Data included the patients' general information, microbiology, operative time, intraoperative blood loss, postoperative complications, intervertebral fusion rate, and preoperative and final follow-up scores for American Spinal Injury Association(ASIA) impairment, visual analogue scale(VAS), and Oswestry Disability Index(ODI). Ten patients had undergone a prior spinal invasive procedure, and 7 had hematogenous infection. The infected segments included L1-2, L2-3, L3-4, and L4-5in 1, 2, 5, and 9 cases, respectively. Thirteen bacterial cultures were positive for Staphylococcus aureus(5 cases), Staphylococcus epidermidis(4), Streptococcus(3), and Escherichia coli(1). The operative time was 213.8±45.6 min, and the intraoperative blood loss was180.6±88.1 mL. Postoperative complications consisted of urinary retention(2 cases), constipation(3),and deep vein thrombosis(2). On the final follow-up, VAS scores and ODIs were significantly lower than those of preoperation, while the ASIA grades improved. All the cases achieved good intervertebral bony fusion. Anterior debridement and fusion with a minimally invasive approach combined with posterior fixation via the Wiltse approach can successfully treat single-level lumbar pyogenic spondylodiscitis, with less trauma and reliable immobilization. It is a viable option for clinical application.