Case Report
Volume 13 Issue 5 - 2022
Head-Neck Taper Corrosion in Total Hip Arthroplasty: Catastrophic Cases Report and Review
Molfetta L1*, Florian A2, Palermo A3, Capozzi M4 and Formica M3
1,2,3University of Genoa, School of Medical and Pharmacological Sciences, DISC Department, Genoa (Italy)
3,4Humanitas University, Orthopaedic Unit, Bergamo (Italy)
*Corresponding Author: Molfetta L, University of Genoa, School of Medical and Pharmacological Sciences, DISC Department, Genoa (Italy).
Received: March 23, 2022; Published: April 20, 2022


The modularity in total hip arthroplasty (THA) has reduced the inventory of the prosthetic system, allowing length and off-set adjustment of the limb, simplifying revision surgery through the replacement of the head only, whenever it is possible. Side effects of modularity, such as fretting and corrosion of the head-neck junction, are well known in revision surgery.

In this cases report we will describe a THA failure after 11 years on the head-neck junction of Accolade I femoral stem, chromium-cobalt (CoCr) femoral head and taper V40 (Stryker 1 Corporation, USA), and a THA failure after 4 years on the head-neck junction of SYMAX 7 (Ti-Al-V) femoral stem with cono-morse V40 (Stryker Orthopaedics) and large 50-4mm metal modular head (Co Cr Mo, Finsbury Orthopaedics), secondary to corrosion and subsequent disassembly of head-neck junction.

We will analyze the literature which highlights the need for greater awareness of the surgeon on the choice of the system implant about the modularity of the femoral neck-prosthetic head, evaluating the materials and geometry of the prosthetic components and overload and alignment of the implant that may be precondition for this complication with, occasionally, catastrophic results.


Keywords: Cono-Morse; Taper; Fretting; Corrosion; Disassembly


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Citation: Molfetta L., et al. “Head-Neck Taper Corrosion in Total Hip Arthroplasty: Catastrophic Cases Report and Review”. EC Orthopaedics 13.5 (2022): 11-19.

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