Dersleri yüzünden oldukça stresli bir ruh haline sikiş hikayeleri bürünüp özel matematik dersinden önce rahatlayabilmek için amatör pornolar kendisini yatak odasına kapatan genç adam telefonundan porno resimleri açtığı porno filmini keyifle seyir ederek yatağını mobil porno okşar ruh dinlendirici olduğunu iddia ettikleri özel sex resim bir masaj salonunda çalışan genç masör hem sağlık hem de huzur sikiş için gelip masaj yaptıracak olan kadını gördüğünde porn nutku tutulur tüm gün boyu seksi lezbiyenleri sikiş dikizleyerek onları en savunmasız anlarında fotoğraflayan azılı erkek lavaboya geçerek fotoğraflara bakıp koca yarağını keyifle okşamaya başlar
New Mechanism of Hip Endoprosthesis Damage Caused by High-frequency Electrocautery
Journal of Medical Implants & Surgery

Like us on:

Make the best use of Scientific Research and information from our 700+ peer reviewed, Open Access Journals that operates with the help of 50,000+ Editorial Board Members and esteemed reviewers and 1000+ Scientific associations in Medical, Clinical, Pharmaceutical, Engineering, Technology and Management Fields.
  • Short Communication   
  • J Med Imp Surg, Vol 1(1)

New Mechanism of Hip Endoprosthesis Damage Caused by High-frequency Electrocautery

Christian Konrads*, Hoberg M and Rudert M
Orthopaedic Clinic Koenig-Ludwig-Haus, Center for Musculoskeletal Research, Julius-Maximilians-University Wuerzburg, Wuerzburg, Germany
*Corresponding Author: Dr. Christian Konrads, Orthopaedic Clinic Koenig-Ludwig-Haus, Center for Musculoskeletal Research, Julius-Maximilians-University Wuerzburg, Brettreichstr. 11, 97074 Wuerzburg, Germany, Tel: +49 931 310, Email: [email protected]

Received: 18-Nov-2015 / Accepted Date: 12-Dec-2015 / Published Date: 19-Dec-2015


Primary total hip arthroplasty has become the most successful orthopaedic operation since introduction by the British surgeon, Sir John Charnley, in the 1960s [1,2]. Numbers of hip endoprosthesis revisions are growing worldwide. In revision surgery of joints, highfrequency electrocauterization instruments are used for homeostasis and soft tissue dissection. If there is contact of these instruments with the metal implants, flashover might occur. This can lead to thermal microstructural changes in the material and as a consequence may reduce the fatigue strength of the implant.

Four cases of hip revision surgeries were analyzed [3,4]. In all cases flashovers occurred and secondarily, the non-modular titanium hip endoprosthesis stem broke in the neck section of the prosthesis. The fractures occurred 7 to 142 months (range 135 months) after single revision surgery without revising the stem. In three of four cases an extra long head was used. After breakage during normal walking in all four cases the damaged stem was explanted and changed to a revision stem.

The explants underwent failure analysis. In all four cases no signs of material or product defects of the titanium wrought alloys (ISO 5832-3) were found. The conducted investigations showed that contact between the high-frequency instrument and the anterolateral aspect of the endoprosthesis neck had occurred. A fatigue fracture pattern started in the contact location. Electrothermal implant damage was found in the broken area.

If in hip revision surgery the stem is not to be replaced, contact and flashovers between high-frequency instruments and the metal implant should be avoided. Due to the high relevance of this topic we are going to start a controlled biomechanical laboratory study. Based on the material analysis shortly communicated here, we hypothesize that flashovers from an electrocautery knife to the lateral aspect of a titanium hip endoprosthesis neck can reduce the implant’s fatigue strength.


Citation: Christian K, Hoberg M, Rudert M (2015) New Mechanism of Hip Endoprosthesis Damage Caused by Highfrequency Electrocautery. J Med Imp Surg 1:102.

Copyright: © 2015 Christian K, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution and reproduction in any medium, provided the original author and source are credited.

Select your language of interest to view the total content in your interested language

Post Your Comment Citation
Share This Article
Article Usage
  • Total views: 9321
  • [From(publication date): 5-2016 - Aug 13, 2022]
  • Breakdown by view type
  • HTML page views: 8817
  • PDF downloads: 504
Share This Article