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  • Title: Prospective study of a cementless total hip arthroplasty with a collum femoris preserving stem and a trabeculae oriented pressfit cup: minimun 6-year follow-up.
    Author: Nowak M, Nowak TE, Schmidt R, Forst R, Kress AM, Mueller LA.
    Journal: Arch Orthop Trauma Surg; 2011 Apr; 131(4):549-55. PubMed ID: 20924764.
    Abstract:
    AIM: Tissue sparing hip prostheses are becoming more and more popular especially for the treatment of younger patients. The objective of this study was to evaluate the clinical and radiological results after insertion of a tissue sparing hip prosthesis. METHOD: In 47 consecutive non-selected patients (50 hips), the clinical and radiographic results of cementless total hip arthroplasty using a collum femoris preserving stem, a pressfit cup and an alumina-polyethylene pairing were prospectively evaluated. The mean age at index-surgery was 58 (36-82) years, there were 38 women and 9 men. After a mean follow-up of 6.8 years (minimum 6.1 years), two patients had died and one patient underwent revision surgery due to aseptic loosening of the stem. RESULTS: The overall survival rate of the acetabular component was 100% and of the femoral component 98%. The mean Harris hip score at follow-up was 94 points. CONCLUSION: The mid-term survival with this type of total hip arthroplasty is excellent and compares equal with uncemented straight stems in this age group.
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