Implantatsch?digung durch Einsatz eines Hochfrequenzmessers

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• 作者：Dr. C. Konrads (1)
  M. N. Wente (2)
  W. Plitz (3)
  M. Rudert (1)
  M. Hoberg (1)
  
• 关键词：Metallimplantate ; Dauerfestigkeit ; Materialanalyse ; Revisionsoperation ; Revision ; joint ; Metal ; on ; metal joint prostheses ; Stress ; mechanical ; Materials testing ; Stem breakage
• 刊名：Der Orthop?de
• 出版年：2014
• 出版时间：December 2014
• 年：2014
• 卷：43
• 期：12
• 页码：1106-1111
• 全文大小：1,040 KB
• 参考文献：1. Charnley J (1975) Fracture of femoral prostheses in total hip replacement. A clinical study. Clin Orthop Relat Res 111:105-20 CrossRef
  2. Grupp TM, Weik T, Bloemer W, Knaebel HP (2010) Modular titanium alloy neck adapter failures in hip replacement -failure mode analysis and influence of implant material. BMC Musculoskelet Disord 11:3 CrossRef
  3. Heck DA, Partridge AM, Reuben JD, Lanzer WL, Lewis CG, Deating EM (1995) Prostetic componenet failures in hip arthroplasty surgery. J Arthroplasty 10:575-80 CrossRef
  4. Huber G, Weik T, Morlock MM (2009) Sch?digung eines Hüftendoprothesenschafts durch Einsatz eines Hochfrequenzmessers. Orthopade 38:622-25 CrossRef
  5. Sadoghi P, Pawelka W, Liebensteiner MC, Williams A, Leithner A, Labek G (2014) The incidence of implant fractures after total hip arthroplasty. Int Orthop 38:39-6 CrossRef
  6. Ungethüm M (1980) Zur Problematik von Prothesenschaftbrüchen. Z Orthop 118:187-99 CrossRef
  
• 作者单位：Dr. C. Konrads (1)
  M. N. Wente (2)
  W. Plitz (3)
  M. Rudert (1)
  M. Hoberg (1)
  
  1. Orthop?dische Klinik K?nig-Ludwig-Haus, Universit?t Würzburg, Brettreichstra?e 11, 97074, Würzburg, Deutschland
  2. Medical Scientific Affairs, Aesculap AG, Am Aesculap-Platz, 78532, Tuttlingen, Deutschland
  3. Hofbrunnstra?e 4, 81479, München, Deutschland
  
• ISSN：1433-0431

文摘

In revision surgery of joints, high-frequency electrocauterization instruments are used for homeostasis and dissection of soft tissue. If there is contact of these instruments with the metal implants, flashover can 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 analysed. In all cases flashovers occurred and secondarily, the titanium hip endoprosthesis stem broke in the neck section of the prosthesis. The conducted investigations showed that contact between the high-frequency instrument and the anterolateral aspect of the endoprosthesis neck had occurred. Electrothermal implant damage was found in the broken area. If in hip revision surgery the stem is not to be replaced, contact between high-frequency instruments and the metal implant should be avoided.