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Failure of the stem in total hip replacement

✍ Scribed by Ugo E. Pazzaglia; Franco Ghisellini; Daniele Barbieri; Luciano Ceciliani

Publisher
Springer
Year
1988
Tongue
English
Weight
765 KB
Volume
107
Category
Article
ISSN
1434-3916

No coin nor oath required. For personal study only.

✦ Synopsis

Thirteen failed stem of Total Hip Replacement were studied: 9 were Charnley THR from an homogeneous series, which gives an incidence of 2.4% of stem fractures with a follow-up of 9-16 years; 4 were Mueller THR. Fatigue fracture of the stem occurred by defective support of the proximal part of the femur, following resorption of the calcar. In all cases reactive tissue to foreign body particles, metal and polyethylene, was found where bone resorption occurred. In Mueller THR wear of the cup produced the large amount of polyethylene particles; in Charnley THR metal particles prevailed and corrosion of the stem is suggested to be the initiating factor.

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