In vivo hydroxyapatite scaffold performance in infected bone defects
Abstract
Critically sized bone defects are often compounded by infectious complications. The standard of care consists of bone autografts with systemic antibiotics. These injuries and treatments lead to donor site morbidity, antibiotic resistant strains of bacteria, and often end stage amputation. This study proposes an alternative to the autograft using a porous, hydroxyapatite (HA) scaffold evaluated with and without infection and antibiotics. Twenty‐four New Zealand white rabbits received either our HA scaffold or a pulverized autograft (PBA) within a surgically created critical‐sized defect in the femur. The two grafts were evaluated in either septic or aseptic defects and with or without antibiotic treatment. The HA scaffolds were characterized with micro computed tomography. Post‐euthanasia, micro computed tomography, histology, and white blood cells component analysis were completed. The HA had significantly greater (p p = .016). The bone quality denoted by bone mineral density was also significantly greater (p 3) than the PBA groups (64.66 ± 0.85 mgHA/cm3). The HA scaffold is a viable alternative to the bone autograft in defects with and without infection as shown by the quality and quantity of bone.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 13, 2019
- Source ID
- 10.1002/jbm.b.34466
Entities
People
- Arpan Satsangi
- Chunsik Bae
- David D. Dean
- Jeffrey O. Hollinger
- Joo L. Ong
- Joseph J. Pearson
- Kyu‐bok Lee
- Mark R. Appleford
- Nicholas Gerken
- Sean Mcbride
- Teja Guda
Organizations
- Carnegie Mellon University
- Chonnam National University
- Kyungpook National University
- United States Army Medical Research and Development Command
- University of Texas at Austin
- University of Texas at San Antonio