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Related Experiment Video

Updated: Dec 29, 2025

Computed Tomography and Optical Imaging of Osteogenesis-angiogenesis Coupling to Assess Integration of Cranial Bone Autografts and Allografts
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Cranial flap fixation in sheep using a resorbable bone adhesive.

Kevin T Foley1, Eric J Woodard2, Jonathan R Slotkin3

  • 11Department of Neurosurgery, University of Tennessee Health Science Center and Semmes Murphey Neurologic and Spine Institute, Memphis, Tennessee.

Journal of Neurosurgery
|February 8, 2020
PubMed
Summary
This summary is machine-generated.

A novel bone adhesive (TTCP-PS) proved safe and effective for cranial flap fixation in sheep, showing superior strength and faster bone healing compared to traditional plates and screws.

Keywords:
bioresorbablebone adhesivefibrosisflap fixationosteoconductionosteointegrationsurgical technique

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Area of Science:

  • Biomaterials Science
  • Orthopedic Surgery
  • Regenerative Medicine

Background:

  • Cranial bone flap fixation traditionally uses titanium plates and screws.
  • These methods can lead to complications like hardware migration and infection.
  • Novel bioresorbable materials are being explored to improve fixation and healing.

Purpose of the Study:

  • To investigate the efficacy and safety of a novel tetracalcium phosphate and phosphoserine (TTCP-PS) bone adhesive for cranial bone flap fixation.
  • To compare the performance of TTCP-PS with conventional titanium plates and screws in an ovine model.

Main Methods:

  • An ovine craniotomy model was used with 41 sheep.
  • Cranial defects were filled with TTCP-PS (fully or partially) or left empty with plate/screw fixation (control).
  • Evaluations included macroscopic, histopathological, histomorphometric, and biomechanical analyses over 2 years.

Main Results:

  • TTCP-PS demonstrated no adverse local tissue effects.
  • Fixation strength was significantly greater in TTCP-PS groups compared to controls at 12 weeks and 1 year.
  • Histomorphometric analysis and biomechanical testing indicated superior performance and osteointegration with TTCP-PS, particularly in the fully filled group.

Conclusions:

  • TTCP-PS is a safe and effective bioresorbable adhesive for cranial flap fixation.
  • It offers biomechanical advantages, promotes faster bone healing without fibrosis, and reduces hardware-related complications.
  • TTCP-PS shows potential to enhance human cranial bone flap fixation and cranioplasty procedures.