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Failure Analysis of Retrieved Osteosynthesis Implants.

Mihai Nica1,2, Bogdan Cretu2, Dragos Ene1,3

  • 1University of Medicine and Pharmacy Carol Davila Bucharest, 050474 Bucharest, Romania.

Materials (Basel, Switzerland)
|March 12, 2020
PubMed
Summary

Osteosynthesis implant failure is often caused by material defects or surgical errors. Analyzing retrieved implants helps improve implant design and surgical techniques for better patient outcomes.

Keywords:
analysisfailureimplantosteosynthesisretrieval

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Area of Science:

  • Orthopedic surgery
  • Biomaterials science
  • Failure analysis

Background:

  • Osteosynthesis implant failure presents significant clinical challenges.
  • Effective investigation and prevention strategies are crucial.

Purpose of the Study:

  • To identify the primary causes of osteosynthesis implant failure.
  • To explore the interrelationships between different failure causes.

Main Methods:

  • Implant retrieval analysis of 21 failed cases.
  • Metallurgical analysis using scanning electron microscopy (SEM), stereomicroscopy, and optical microscopy.
  • Standard radiological examination.

Main Results:

  • Material structural deficiencies were identified in nine patients.
  • Faulty surgical techniques were implicated in eight patients.
  • Six patients showed a combination of material deficiencies and imperfect surgical techniques.

Conclusions:

  • Implant retrieval analysis is essential for understanding failure mechanisms.
  • Findings can guide improvements in implant manufacturing, design, and surgical techniques.
  • A combined approach of retrieval analysis and radiological examination is recommended.