Abstract
This report describes a case of mechanically assisted crevice corrosion and secondary adverse local tissue reaction in a patient following a total hip arthroplasty, utilizing a modular neck (bi-modular) femoral component. Radiographic evaluation demonstrated a well-positioned, stable, cementless arthroplasty. Upon further evaluation, the patient had elevated serum cobalt and chromium levels, and magnetic resonance imaging demonstrated a periprosthetic pseudotumor. Corrosion of both the neck-stem and head-neck junctions was suspected. At the time of surgery, the neck-body junction was pristine; however, the head-neck junction of the implant demonstrated severe corrosive wear, a problem that has been reported only once previously with this particular bi-modular implant. This serves as a reminder that any modular junction may be susceptible to corrosion and not all bi-modular designs behave similarly.
Original language | English (US) |
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Pages (from-to) | 211-214 |
Number of pages | 4 |
Journal | Arthroplasty Today |
Volume | 3 |
Issue number | 4 |
DOIs | |
State | Published - Dec 2017 |
Keywords
- Bi-modular femoral stem
- Metallosis
- Modular titanium alloy femoral neck
- Pseudotumor
- Total hip replacement
- Trunnionosis
ASJC Scopus subject areas
- Surgery
- Orthopedics and Sports Medicine