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Risk Factors of Deep Infection after Thoracic and Lumbar Spinal Arthrodesis

  • Journal of Korean Society of Spine Surgery
  • Abbr : J Kor Spine Sur
  • 2008, 15(3), pp.149-156
  • Publisher : Korean Society Of Spine Surgery
  • Research Area : Medicine and Pharmacy > Orthopedic Surgery

송경진 1 송광훈 1 Yong-Geun Park, 2 이광복 1 김상림 3

1전북대학교
2제주대학교 정형외과
3제주대학교

Candidate

ABSTRACT

Study Design: This is a retrospective analysis Objectives: We wanted to analyze the risk factors related to deep infection and removing an implant after thoracic and lumbar spinal arthrodesis. Summary of literature reviews: The relationship between deep infection and implant removal is controversial. Materials and Methods: We retrospectively compared the infection group with the non-infection group for the rates of deep infection, the preoperative diagnosis, the number of fused segments, the operative methods, the graft materials, the operating time and the blood loss. Moreover, we classified the deep infection patients into two groups: those who underwent implant removal and those who did not, and we compared the microorganisms that were cultured out of the patients. We also compared the relationship of deep infection with the risk factors, the mean hospital stay and the mean number of operations. Results: There were 18 cases (2.46%) of deep infection. The factors that did not show a significant difference were the preoperative diagnosis, the graft material, the increased number of fused segments, age, gender and BMI. The factors that were significant were the operating time (p=0.001), the amount of blood loss (p<0.000), DM (p=0.021), and PLF (p=0.054). The incidence of implant removal was higher for the cases with deep infection caused by MRSA. We were able to see a significant difference of between the group that had undergone implant removal and the group that had not undergone implant removal. Conclusions: The incidence of deep infection after thoracic and lumbar spinal athrodesis increased as the operating time and blood loss increased, and it was also higher when either PLF or DM were present. Implant removal causes bad clinical results, so physicians should be very cautious when operating on a case of implant removal.

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