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  • Title: Notching of the femoral stem neck in metal-on-metal total hip replacement: a case report.
    Author: Leung KH, Chiu KY, Ng FY, Yin L.
    Journal: J Orthop Surg (Hong Kong); 2013 Apr; 21(1):113-6. PubMed ID: 23630003.
    Abstract:
    We report a case of impingement in a metal-on-metal total hip replacement causing both notching of the femoral stem neck and aseptic loosening of the acetabular component. The acetabular component was inserted in excessive anteversion. The femoral stem and acetabular components were retrieved. A larger femoral head was used, and an acetabular component was placed in a less anteverted position. Intra-operative testing through different ranges of movement is recommended to identify potential impingement.
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