Abstract
Background
Due to the aging society, the incidence of pyogenic spondylodiscitis is still rising. Although surgical treatment for spondylodiscitis in general is increasingly accepted, an optimal surgical strategy for treatment of pyogenic spinal infection has not yet been established. The aim of this study was to investigate the suitability of percutaneous posterior pedicle screw fixation for surgical treatment in patients with spondylodiscitis of the thoracolumbar spine.
Methods
We conducted a retrospective review of a consecutive cohort of patients undergoing surgical treatment for spondylodiscitis of the thoracolumbar spine between January 2017 and December 2019. We assessed intraoperative and clinical data, comparing for the classic open and the percutaneous approach. In total, we analyzed 125 cases (39 female, 86 male). The mean age was 69.49 years ± 12.63 years.
Results
Forty-seven (37.6%) patients were operated on by a percutaneous approach for pedicle screw fixation, and 78 (62.4%) received open surgery. There was no significant difference in the mean age of patients between both groups (p= 0.57). The time of surgery for percutaneous fixation was statistically significantly shorter (p= 0.03). Furthermore, the estimated intraoperative blood loss was significantly lower in the minimally invasive group (p < 0.001). No significant difference could be observed regarding the recurrence rate of spondylodiscitis and the occurrence of surgical site infections (p= 0.2 and 0.5, respectively).
Conclusion
Percutaneous posterior pedicle screw fixation appears to be a feasible option for the surgical treatment of a selected patient group with spondylodiscitis of the thoracic and lumbar spine.
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Abbreviations
- ECs:
-
erythrocyte concentrates
- MISS:
-
minimal invasive spine surgery
- CRP:
-
C-reactive protein
- ICU:
-
intensive care unit
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The authors present their 3-year series of 125 spondylodiscitis patients, who were surgically treated either by an open posterior approach or percutaneous instrumentation +/- midline decompression/debridement +/- a second anterolateral debridement approach. Percutaneous surgery had advantages (MIS) and achieved comparable results. This is an important paper supporting MIS for spinal infection, which has clear advantages in suitable patients.
The main limitations, which the authors state themselves, are the selection bias, as the percutaneous group was less severe, and the fact that 68% of MIS patients received a second staged procedure. Nevertheless, it is well demonstrated that many patients can be treated in a minimally-invasive fashion, which is particularly helpful in this elderly and often comorbid population. Early and aggressive surgery for spinal infection has been repeatedly suggested recently and has been associated with decreased mortality. However, spine surgeons may still be reluctant to proceed with extensive open surgery in these cases. Using MIS and/or staging the procedure, as suggested by this distinguished group, offers a solution that can be tailored to the individual patient. Therefore, the difficult decision we were faced with in the past between less effective conservative care and an extensive surgical procedure with high perioperative morbidity and mortality is circumvented.
Decision-making in these patients has to consider (1) the presence (or absence) of an intraspinal abscess, which may require surgical drainage and direct decompression and (2) the extent of destruction of the anterior column, which may require debridement and reconstruction. As the authors nicely show, both can be achieved as an add-on to percutaneous pedicle screw instrumentation in a MIS fashion via a small midline or a lateral approach.
Claudius Thome,
Tirol, Austria
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Janssen, I.K., Jörger, AK., Barz, M. et al. Minimally invasive posterior pedicle screw fixation versus open instrumentation in patients with thoracolumbar spondylodiscitis. Acta Neurochir 163, 1553–1560 (2021). https://doi.org/10.1007/s00701-021-04744-z
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DOI: https://doi.org/10.1007/s00701-021-04744-z