CoCrMo Alloy for Biomedical Applications

  • Ingrid Milošev
Part of the Modern Aspects of Electrochemistry book series (MAOE, volume 55)


Metallic materials used in biomedical applications have become increasingly important as the number of various implanted devices, e.g., orthopedic, cardiovascular, dental, and ophthalmological implants, constantly increases. In addition to titanium-based alloys and stainless steel, cobalt–chromium–molybdenum alloy (CoCrMo) is one of the most important materials used in orthopedic applications, i.e., total hip replacements. The increasing number of implanted hip replacements is the result of the prolongation of the average life expectancy and an active lifestyle in older age. Among the diseases of the joint that in most cases require surgical treatment, osteoarthritis is the most important. After implantation of a hip prosthesis, pain is reduced and the functionality of the joint is recovered. The average lifetime of the implanted prosthesis is about 15 years. Compared to implants used in the 1970s, the lifetime of contemporary hip prostheses progressively increases because of progress in surgical techniques, treatment, material manufacturing, and quality control. The ultimate goal is to produce hip prostheses that would endure the average postsurgical lifetime of more than 20 years and enable the patient to live an active lifestyle without pain. To achieve this goal, understanding alloy behavior in vitro and in vivo is crucial.


Phosphate Buffer Solution Passive Film Passive Layer Crevice Corrosion Passive Region 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



The valuable technical assistance of Mr. Gregor Žerjav is gratefully acknowledged. High-resolution TEM experiments on CoCr-based particles were carried out by Dr. Maja Remškar. The author thanks the orthopedic surgeons at the Valdoltra Orthopedic Hospital for collaboration on retrieval studies. The financial support by the Slovene Research Agency is greatly appreciates (grants No. P2-0148 and J1-2243).


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Copyright information

© Springer Science+Business Media New York 2012

Authors and Affiliations

  1. 1.Jožef Stefan InstituteLjubljanaSlovenia
  2. 2.Valdoltra Orthopedic HospitalAnkaranSlovenia

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