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Updated: Jun 19, 2026

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

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

Published on: February 27, 2018

Conservative stems in total hip replacement.

Ian D Learmonth1

  • 1University of Bristol, Honorary Consultant University Hospitals Bristol NHS Foundation Trust and North Bristol NHS Trust, UK. ian.learmonth@bristol.ac.uk

Hip International : the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
|October 2, 2009
PubMed
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Early conservative hip implants failed due to fixation and articulation issues. Modern designs aim to improve outcomes for younger arthritis patients, but long-term success depends on reducing premature failure rates.

Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering
  • Materials Science

Background:

  • Hip arthritis primarily affects joint surfaces, necessitating surgical replacement.
  • Early conservative hip implants faced challenges with fixation and articulation.
  • Conservative implants preserve bone and allow for physiological loading, potentially benefiting younger patients.

Purpose of the Study:

  • To explore the historical evolution of conservative total hip prostheses.
  • To evaluate the outcomes and results of early and contemporary conservative hip implant designs.
  • To assess the viability of conservative hip implants in managing hip arthritis, particularly in younger individuals.

Main Methods:

  • Review of historical data and literature on early conservative hip implant designs.

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Last Updated: Jun 19, 2026

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

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

Published on: February 27, 2018

The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve
09:51

The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve

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  • Analysis of clinical outcomes, including fixation, articulation, and failure rates.
  • Examination of the biomechanical principles and surgical techniques associated with conservative hip replacement.

    • Main Results:

    • Early conservative hip prostheses demonstrated significant issues with inadequate fixation and early articulation failure.
    • Contemporary conservative designs aim to address these limitations, offering bone preservation and softer tissue approaches.
    • The success of these modern implants is contingent upon achieving acceptable long-term durability and minimizing premature failure.

    Conclusions:

    • The evolution of conservative hip prostheses reflects a progression towards improved fixation and articulation.
    • While offering potential advantages like bone preservation, the long-term efficacy of conservative hip implants requires further validation.
    • Careful patient selection and continued design refinement are crucial for the successful application of conservative hip replacement strategies.