• World Neurosurg · Oct 2017

    The effect of biocomposite screws on bone regeneration in a rat osteoporosis model.

    • Je Hoon Jeong, Eun-Sun Jin, Ji Yeon Kim, Bora Lee, JoongKee Min, Sang Ryong Jeon, Minsu Lee, and Kyoung Hyo Choi.
    • Department of Neurosurgery, Soonchunhyang University Hospital, Bucheon, Korea; Laboratory of Stem Cell Therapy, College of Medicine, Asan Medical Center, University of Ulsan, Ulsan, Korea.
    • World Neurosurg. 2017 Oct 1; 106: 964-972.

    ObjectiveTo evaluate the efficacy of biocomposite screws used in ovariectomy (OVX)-induced osteoporotic rats.MethodsTwenty-four female Wistar rats (250-300 g, 12 weeks old) were divided into 4 groups: sham group (control), OVX-induced osteoporosis group (OVX), OVX and biodegradable poly(lactic-co-glycolic acid) (PLGA) without tricalcium phosphate (β-TCP) screw insertion group (OVX/BSR), and OVX and biocomposite (PLGA with β-TCP) screw insertion group (OVX/CSR). Three groups underwent bilateral OVX, and of these, 2 groups had 2 different types of screw inserted at the proximal tibia. At 25 weeks after OVX, the bilateral tibias were extracted. The extracted tibiae were scanned by ex vivo micro-computed tomography (CT) and stained with hematoxylin and eosin (H&E) and with Masson's trichrome stain for pathological assessment.ResultsCompared with the ovariectomized groups, the control group had the highest values for bone mineral density (BMD), bone volume (BV)/total volume (TV), and trabecular number (Tb.N) and the lowest values for trabecular thickness (Tb.Th) and trabecular separation (Tb.Sp). In the pairwise comparison among ovariectomized groups, the OVX/CSR group had significantly higher BMD, BV/TV, and Tb.N values than the other 2 groups (OVX and OVX/BSR) and significantly lower Tb.Sp. Micro-CT scans showed clear evidence of new trabecular formation near the screw insertion site in the OVX/CSR group only. Analyses of H&E- and Masson's trichrome-stained sections showed more and thicker trabecular bone around the implant in the OVX/CSR group compared with the OVX and OVX/BSR groups.ConclusionsBiocomposite screws can improve local bone quality and facilitate osteoconductivity in an osteoporotic rat model.Copyright © 2017 Elsevier Inc. All rights reserved.

      Pubmed     Full text   Copy Citation     Plaintext  

      Add institutional full text...

    Notes

     
    Knowledge, pearl, summary or comment to share?
    300 characters remaining
    help        
    You can also include formatting, links, images and footnotes in your notes
    • Simple formatting can be added to notes, such as *italics*, _underline_ or **bold**.
    • Superscript can be denoted by <sup>text</sup> and subscript <sub>text</sub>.
    • Numbered or bulleted lists can be created using either numbered lines 1. 2. 3., hyphens - or asterisks *.
    • Links can be included with: [my link to pubmed](http://pubmed.com)
    • Images can be included with: ![alt text](https://bestmedicaljournal.com/study_graph.jpg "Image Title Text")
    • For footnotes use [^1](This is a footnote.) inline.
    • Or use an inline reference [^1] to refer to a longer footnote elseweher in the document [^1]: This is a long footnote..

    hide…