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Related Experiment Videos

Thigh pain in cementless total hip replacement

Y Hamada1, N Akamatsu, I Nakajima

  • 1Department of Orthopaedic Surgery, Yamanashi Medical College, Japan.

Nihon Seikeigeka Gakkai Zasshi
|July 1, 1993
PubMed
Summary

This study found that the cementless total hip system model YII significantly reduced thigh pain compared to model Y. Proper stem fit and restricted weight-bearing are key to preventing thigh pain after hip replacement surgery.

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Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering
  • Materials Science

Background:

  • Thigh pain is a potential complication following cementless total hip arthroplasty.
  • Previous hip implant designs have varied in their incidence of thigh pain.
  • Understanding the factors contributing to thigh pain is crucial for improving patient outcomes.

Purpose of the Study:

  • To compare the incidence of thigh pain between two cementless total hip system models (Y and YII).
  • To identify factors influencing thigh pain after total hip replacement.
  • To evaluate the effectiveness of an improved stem design in reducing thigh pain.

Main Methods:

  • A cohort of 51 patients undergoing cementless total hip replacement was studied.
  • Patients received either the model Y or model YII cementless total hip system.

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  • Follow-up was conducted for one or more years post-surgery to record thigh pain incidence.

    • Main Results:

    • Thigh pain occurred in 43% of patients (11/26) with the model Y system.
    • Only 8% of patients (2/25) with the model YII system reported thigh pain.
    • The reduced incidence in model YII was attributed to differences in stem press fit and stress distribution.

    Conclusions:

    • The cementless total hip system model YII demonstrates a significantly lower incidence of thigh pain compared to model Y.
    • Achieving optimal stem press fit and managing postoperative weight-bearing are critical for minimizing thigh pain.
    • Improved stem designs with uniform stress distribution can effectively reduce thigh pain after total hip arthroplasty.