Introduction: Percutaneous intradiscal drainage had little established evidence to date. We assessed the outcomes of C-arm cone-beam CT-guided (CBCT-guided) procedures for spondylodiscitis and compare procedures with and without intradiscal drainage.
Material and methods: A retrospective review was conducted on patients who underwent CBCT-guided procedures for spondylodiscitis with fluid collection in the intradiscal space between January 2010 and September 2021. Included patients were divided into two groups: with and without 'intradiscal drainage' (ID and non-ID, respectively).
Results: A total of 87 patients with thoracolumbar discitis (mean age 73.4 ± 12.3 years, 35 females) were included. There was no significant difference in clinical outcomes between groups. Although insignificant, a subgroup analysis of patients with discitis and psoas abscess showed a higher infection control success rate (81% (17/21) vs 58% (7/12), p = .23) and faster median C-reactive protein improvement (CRP <3 mg/dL: 12 vs 42 days, p = .11, CRP <1 mg/dL: 27 vs 45 days, p = .097) of ID than of non-ID.
Conclusions: Findings did not clarify the role of intradiscal drainage when it was indicated in all cases of spondylodiscitis with fluid collection. Future studies with larger sample sizes of selected discitis cases are expected to demonstrate the superiority of intradiscal drainage.
Keywords: C-arm cone-beam CT; CBCT-guided procedure; Spondylodiscitis; intradiscal drainage; percutaneous drainage.