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Updated: Nov 23, 2025
An Improved Mechanical Testing Method to Assess Bone-implant Anchorage
Published on: February 10, 2014
[EXPERIMENTAL STUDY OF THE STRENGTH AND MORPHOLOGICAL CHARACTERISTICS OF THE BONE-FIXATOR SYSTEM WHEN THE IMPLANT
I Lazarev1, V Protsenko1, A Buryanov2
11State Institution "Institute of Traumatology and Orthopedics of the National Academy of Medical Sciences of Ukraine".
Abstract:
The aim of the work is to compare the effect on the strength of bone tissue of spraying ceramic materials on the surface of titanium-nickel plates and pins and to show the results of electron microscopic examination of bone micropreparations at the site of immersion of the implant. Preparations of rat tibia after metal osteosynthesis with intramedullary titanium-nickel pins and titanium-nickel bone plates with spraying on their surface material based on bioactive glass, hydroxyapatite and pins and plates without spraying were investigated. Using a device based on a strain gauge and a caliper with digital display recorded load-deformation diagrams during compression of the test sample, as well as perform bone sampling at the site of immersion of the implant and determine morphological changes in bone using an electron microscope. The greatest strength was observed when using a titanium-nickel pin sprayed with biocomposite, titanium-nickel plate sprayed with biocomposite, hydroxyapatite doped with silver (8 weeks after surgery). The lowest strength was observed in the samples after application of the plate without spraying and the pin with spraying of hydroxyapatite doped with silver (4 weeks), and the pin without spraying (8 weeks after implantation). The processes of integration of implants with spraying on their surface of the biocomposite with the surrounding bone were determined by electron microscopy. The advantage of intramedullary and bony fixators with spraying on the surface of the material based on bioactive glass, compared to osteosynthesis, where no spraying on the surface of the clamps of ceramic material, due to the ability to withstand higher loads with stable fixation. This may be the basis for the choice of osteosynthesis in patients with pathological fractures of the proximal tibia in this group of patients. At the electron microscopic level, the integration of sprayed implants on the surface of the biocomposite with the surrounding bone was confirmed.
