Taper corrosion: a complication of total hip arthroplasty

EFORT Open Reviews

article

Michael M. Morlock¹  Robert Hube²  Georgi Wassilew³  Felix Prange⁴  Gerd Huber⁵  Carsten Perka⁵ 

[1] TUHH Hamburg University of Technology;OCM Clinic Munich;Department for Orthopaedics and Orthopaedic Surgery, University of Greifswald;Center for Musculoskeletal Surgery, Orthopedic Department;Institute of Biomechanics, TUHH Hamburg University of Technology

关键词: taper;    design;    corrosion;    contamination;    assembly;    loading;    metal;   

DOI  :  10.1302/2058-5241.5.200013

学科分类：神经科学

来源: The British Editorial Society of Bone & Joint Surgery

【 摘 要 】

Corrosion at modular taper junctions has been a known phenomenon for the last 30 years. Interestingly the first paper addressing the issue came to the conclusion that ‘there should be no occurrence of long-term in-vivo fretting corrosion’ of heads made from Cobald-ChromiumAlloy or Ti6Al4V stems.1 Today it is well known that such a general statement was not justified based on pre-clinical testing alone, which is always a drastic simplification of invivo loading and environment. A PubMed literature search (13 July 2020) with the search terms ‘(taper OR trunnion) AND (hip) AND (corrosion)’ yielded 350 relevant hits, demonstrating the continuing interest in this topic. The reported studies describe clinical observations based on explant analyses from single cases or case series or the results of laboratory testing, systematically investigating the influence of the parameters derived from the clinical observations on the risk of taper corrosion. The main findings of these reports are summarized in this review, but the goal is not to add another review article to this topic but rather to focus on the question: How big is the taper corrosion problem currently in a representative setting in Germany after the removal of the most endangered designs from the market? The second goal is to formulate measures based on this analysis to further reduce the problem in the future.

【 授权许可】

CC BY|CC BY-NC|CC BY-NC-ND