Chinese Journal of Tissue Engineering Research ›› 2017, Vol. 21 ›› Issue (15): 2325-2330.doi: 10.3969/j.issn.2095-4344.2017.15.006

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Carbon fiber-reinforced polyetgeretherketone for femoral head prosthesis and its stability: a biomechanical analysis  

Ji Zhi-hua, Jia Bing-shen, Zhou Li-yi, Fu Kun, Meng Zhi-bin, Yu Peng, Yun Da-ke   

  1. the First Affiliated Hospital of Hainan Medical University, Haikou 570102, Hainan Province, China
  • Online:2017-05-28 Published:2017-06-07
  • Contact: Jia Bing-shen, Master, Attending physician, the First Affiliated Hospital of Hainan Medical University, Haikou 570102, Hainan Province, China
  • About author:Ji Zhi-hua, Associate chief physician, the First Affiliated Hospital of Hainan Medical University, Haikou 570102, Hainan Province, China
  • Supported by:

    the Natural Science Foundation of Hainan Province, No. 814357

Abstract:

BACKGROUND: Metal implants have been extensively applied in joint arthoplasty, but the stress shielding effect caused by its high elastic modulus results in a series of complications, such as bone resorption, bone atrophy and prosthesis loosening. Carbon fiber-reinforced polyetheretherketone (CF-PEEK) composites are anisotropic and exhibit more advantages used for prosthesis due to its low elastic modulus and high intensity.

OBJECTIVE: To investigate the blood compatibility of CF-PEEK composites, and compare the biomechanical properties after arthroplasty between CF-PEEK composites and Co-Cr-Mo used for femoral head prosthesis.
METHODS: (1) The blood compatibility of CF-PEEK composites was evaluated through hemolysis test. (2) Femoral samples from eight fresh cadavers were collected and randomly divided into two groups, followed by subjected to CF-PEEK and Co-Cr-Mo prosthesis replacement, respectively. The displacement between the prosthesis and bone was measured under loading 200, 400, 600, 800 and 1 000 N, and the torsional strength after arthroplasty was detected.
RESULTS AND CONCLUSION: (1) The hemolysis rate of the CF-PEEK composites was 3.23% < 5%, which was in line with the national standards for biological evaluation of medical devices. (2) The micromovement in distal prosthesis was significantly less than that of proximal prosthesis under different loads in both two groups (P < 0.05). (3) The torsion angle under different loads in the CF-PEEK group was significantly less than that in the Co-Cr-Mo group (P < 0.05), and the torsion stiffness in the CF-PEEK group was significantly higher than that in the Co-Cr-Mo group (P < 0.05). (4) To conclude, the CF-PEEK composites possess good blood compatibility and stability, which can be used as a prosthesis material.

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程

Key words:  Vitallium, Bioprosthesis, Tissue Engineering

CLC Number: