Chinese Journal of Tissue Engineering Research ›› 2014, Vol. 18 ›› Issue (35): 5595-5599.doi: 10.3969/j.issn.2095-4344.2014.35.004

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Large-diameter ceramic head articulation against highly cross-linked polyethylene in young patients: 2-year wear rate

Sun Jiu-yi1, Fu Pei-liang2   

  1. 1Department of Orthopedics, 455 Hospital of Chinese PLA, Shanghai 200052, China
    2Department of Joint Surgery, Shanghai Changzheng Hospital, Shanghai 200052, China
  • Revised:2014-07-19 Online:2014-08-27 Published:2014-08-27
  • About author:Sun Jiu-yi, Master, Attending physician, Department of Orthopedics, 455 Hospital of Chinese PLA, Shanghai 200052, China

Abstract:

BACKGROUND: Prosthesis friction interface is a hot focus in the study of total hip joint. Polyethylene wear particles induced inflammatory reaction, resulting in osteolysis surrounding the prosthesis and prosthesis loosening. To reduce polyethylene wear, ceramics-ceramics and ceramices-polyethylene friction interfaces were selected. High cross-linked polyethylene material with high intensity was selected. In young patients with large activity amount, the application of ceramic head is a great progress.
OBJECTIVE: To assess the safety of large-diameter alumina ceramic matrix composites (BIOLOX® delta) ball on third-generation highly cross-linked polyethylene (Trident X3, Stryker, Mahwah, NJ) total hip arthroplasty in young patients, and to perform radiological measurements of high cross-linked polyethylene wear rate in the shortest two years after follow-up.
METHODS: From July 2008 to June 2010, wear analysis of 30 cases aged less than 60 years with 32 hips with 36-mm BIOLOX® delta ceramic femoral heads (CeramTec, Plochingen, Germany) on highly cross-linked polyethylene was performed in the 455 Hospital of Chinese PLA using Roman software (Robert Jones & Agnes Hunt Orthopaedic Hospital, Oswestry, United Kingdom). The mean age of patients was 56.8 ± 6.5 years. 
RESULTS AND CONCLUSION: Follow-up was conducted from 2 to 3.7 years old. There were no imaging evidences, such as dislocation, the ball head fracture or joint loosening or osteolysis. Mean Harris score was  increased from (19.9±7.3) (11-36) before replacement to (35.3±5.4) at 6 months after replacement. The mean wear rate was (0.022±0.11) mm/year after run-in period. These data indicated that large-diameter ceramic head articulation against highly cross-linked polyethylene in young patients would have high safety for joint dislocation, prosthesis fragmentation and low wear rates.


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


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Key words: arthroplasty, replacement, hip, ceramics, polyethylene, dislocations

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