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Updated: Jun 25, 2025

Automated Quantification of Hematopoietic Cell – Stromal Cell Interactions in Histological Images of Undecalcified Bone
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Cryopreserved bone flaps from decompressive craniectomies: a microbiological analysis.

Alexander Romagna1,2, Albert Eckert3, Florian Scherg4

  • 1Department of Neurosurgery, University Hospital Salzburg, Paracelsus Medical University, Salzburg, Austria. alexander.romagna@muenchen-klinik.de.

Acta Neurochirurgica
|May 21, 2024
PubMed
Summary
This summary is machine-generated.

Bacterial contamination is common in cryopreserved bone flaps used for cranioplasty. Disinfection significantly reduces bacterial growth, but further research is needed to optimize antiseptic measures for preventing surgical site infections.

Keywords:
Autologous bone flapCranioplastyCryopreservationSurgical site infection

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Area of Science:

  • Neurosurgery
  • Infectious Disease
  • Microbiology

Background:

  • Surgical site infection (SSI) is a significant complication following cranioplasty.
  • The reliability of autologous bone flap cultures after cryopreservation for predicting SSI remains debated.
  • Decompressive craniectomies often necessitate the use of cryopreserved bone flaps.

Purpose of the Study:

  • To assess bacterial contamination in bone flaps after decompressive craniotomy.
  • To evaluate the impact of cryopreservation on bacterial contamination rates.
  • To investigate the effectiveness of anti-infective treatment in reducing microbial load before cranioplasty.

Main Methods:

  • Analysis of cryopreserved bone flaps from two institutions.
  • Microbiological swab cultures performed before and after cryopreservation.
  • Testing of bone flaps after disinfection with octenidine-phenoxyethanol and saline.

Main Results:

  • 54% of bone flaps showed bacterial contamination prior to cryopreservation, with Propionibacterium acnes being most prevalent.
  • Disinfection with octenidine-phenoxyethanol and saline effectively eliminated bacterial growth in most cases.
  • No significant risk factors for bacterial contamination were identified.

Conclusions:

  • Cryopreserved bone flaps frequently harbor bacteria.
  • Disinfection protocols show promise in reducing bacterial contamination.
  • Further research is essential to refine antiseptic strategies for autologous cranioplasty to minimize SSI risk.