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Related Experiment Video

Updated: Apr 3, 2026

Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty
09:31

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Published on: February 27, 2018

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Second-Generation Versus First-Generation Cementless Tapered Wedge Femoral Stems.

Todd P Pierce, Julio J Jauregui, Bhaveen H Kapadia

    Orthopedics
    |September 17, 2015
    PubMed
    Summary
    This summary is machine-generated.

    The new second-generation cementless hip stem shows similar survivorship and outcomes to the first-generation model. This advanced tapered wedge stem offers comparable clinical performance in total hip arthroplasty.

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    Use of Human Perivascular Stem Cells for Bone Regeneration
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    Area of Science:

    • Orthopedic Surgery
    • Biomedical Engineering
    • Implant Design

    Background:

    • Total hip arthroplasty (THA) is a common procedure for hip joint issues.
    • Advancements in implant design aim to improve longevity and patient outcomes.
    • Cementless hip stems are widely used, with ongoing development in materials and geometry.

    Purpose of the Study:

    • To compare the clinical outcomes of a second-generation proximally coated, tapered wedge cementless stem with its predecessor.
    • To evaluate all-cause implant survivorship, objective and subjective outcomes, complications, and radiographic features.
    • To assess the impact of design modifications, including stem shortening and CT-based fit enhancement.

    Main Methods:

    • A comparative study involving patients undergoing primary total hip arthroplasty.
    • Group 1: Second-generation stem (68 hips).
    • Group 2: First-generation stem (136 hips).
    • Mean follow-up of 3.5 years.
    • Evaluation of survivorship, functional and subjective outcomes, complications, and radiographic analysis.

    Main Results:

    • The second-generation cementless hip stem demonstrated comparable all-cause implant survivorship to the first-generation stem.
    • No significant differences were observed in objective and subjective functional outcomes between the two stem generations.
    • Complication rates and radiographic features were similar between the groups.

    Conclusions:

    • The second-generation proximally coated, tapered wedge cementless stem offers clinical outcomes equivalent to its predecessor.
    • Design modifications in the second-generation stem did not negatively impact survivorship or functional results.
    • This study supports the continued use and development of advanced cementless hip stem designs.