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Abstract
Summary of the Literature Review
Infection after spinal surgery is relatively uncommon. However, such infections cause serious consequences and increased costs and sequelae. Risk factors for infection after spinal surgery include a posterior approach, instrumentation, the use of an allogenic bone graft, transfusion, and a long operating time. Patient-related factors include diabetes and obesity.
Materials and Methods
From January 2009 to December 2013, 350 patients who underwent surgery at our hospital due to spinal disease, including 10 patients with a postoperative spinal infection, were evaluated. We investigated patients’ age, gender, morbidity due to diabetes mellitus, body mass index, level of surgery, approach, location, instrumentation, and operation type.
Results
Ten of the 350 patients developed a spinal infection after surgery. The proportion of diabetic patients among the infected patients was higher than among the non-infected patients, although the difference was not statistically significant. Additionally, the proportion of diabetic patients with hemoglobin A1c levels greater than 7.0% was higher among the infected patients. Operating time, the surgical approach, drain tube insertion, transfusion, and the use of an allogenic bone graft were not significantly different between the infected and non-infected patient groups.
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Fig. 2.
Magnetic resonance imaging (sagittal view, axial view) shows osteomyelitis of the L3 vertebra body (A) and large fluid collection on both psoas muscles (B) in an 86-year-old patient who had posterior fusion from T12 to L3.
Table 1.
Demographics in the two groups; surgical site infection group, non-surgical site infection group
Table 2.
Demographics in the two groups; uncontrolled DM group, controlled DM group
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