Anterior approach arthrodesis - ALIF with use of a titanium cage for treatment of postoperative spondylodiscitis after lumbar microdiscectomy

Introduction. Infectious spondylodiscitis has an incidence of 0.21-3.6%. The best intervention should be individualized, using antibiotics only or combining them with stabilizing surgeries. Case presentation. A 38-year-old man presented with lumbosciatalgia, severe pain and inability to ambulate. Magnetic resonance imaging (MRI) of the lumbar spine showed L5-S1 extruded disc herniation and the patient underwent endoscopic microdiscectomy with complete remission of symptoms. After two weeks, he reported severe low back pain and a return of difficulty to walk. Laboratory tests showed an increase in CRP and ESR. MRI showed signs of lumbar spondylodiscitis. The patient started on broad-spectrum intravenous antibiotic therapy. He evolved with improvement in laboratory parameters and maintenance of low back pain. Due to the failure of conservative treatment, anterior approach arthrodesis (ALIF) was chosen, with the complete improvement of the low back pain and the return of the ability to walk. Discussion. Postoperative spondylodiscitis’ frequency depends on the invasiveness of the operation and the type of surgery performed. The most likely source of infection is direct inoculation by virulent pathogens during surgery. A diagnosis delay of more than two months is considered a risk factor for generating adverse results. A Conservative approach is indicated for the patient who is neurologically intact and with minimal bone destruction. Surgical indications are the presence of neurological deficits, intraspinal abscesses, extensive bone destruction, and failure of conservative management. ALIF is supported in the literature because it allows wide exposure of the entire disc space through efficient access to the spine with the complete evacuation of the disc, avoiding dissection of perineural scar tissue and preserving the articular facets. Conclusion. Early diagnosis and treatment are crucial, although there is still no consensus about the best treatment approach. The use of a titanium cage with a bioglass graft had a good response in pain and infection control in our case.