Fracture of a Cross-Linked Polyethylene Liner Due to Impingement

Abstract We report a case of fracture at 2 years after implantation of a 50-kGy moderately cross-linked ultrahigh molecular weight polyethylene liner with an extended lip (Marathon, DePuy, Warsaw, IN). The extended lip section had fractured. The liner showed no oxidation. The articular surface was g...

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Bibliographic Details
Published in:The Journal of arthroplasty 2009, Vol.24 (1), p.158.e15-158.e19
Main Authors: Duffy, Gavan P., MD, Wannomae, Keith K., BS, Rowell, Shannon L., BS, Muratoglu, Orhun K., PhD
Format: Article
Language:English
Subjects:
Aged, 80 and over
Arthralgia - diagnosis
Arthralgia - etiology
Arthroplasty, Replacement, Hip - adverse effects
Arthroplasty, Replacement, Hip - instrumentation
early failure
fatigue failure
Female
Femur Neck
highly cross-linked polyethylene
Hip Joint - diagnostic imaging
Hip Joint - surgery
Hip Prosthesis
Humans
impingement
Orthopedics
Polyethylene
Prosthesis Failure
Radiography
total hip arthroplasty
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Summary:Abstract We report a case of fracture at 2 years after implantation of a 50-kGy moderately cross-linked ultrahigh molecular weight polyethylene liner with an extended lip (Marathon, DePuy, Warsaw, IN). The extended lip section had fractured. The liner showed no oxidation. The articular surface was grossly deformed, likely due to wear, creep, and/or plastic deformation, and the liner showed no recovery of machining marks upon melting, indicating that some wear had occurred. Electron microscopy revealed fatigue striations on the fracture surface. The likely cause of failure was femoral neck impingement–induced wear and fatigue on the liner.
ISSN:0883-5403
1532-8406
DOI:10.1016/j.arth.2007.12.020