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Related Experiment Videos

Bilateral hip and knee arthroplasty.

J D Grauer, A Cracchiolo, G A Finerman

    The Journal of Arthroplasty
    |January 1, 1986
    PubMed
    Summary

    This study on hip and knee arthroplasty in severely deformed patients found significant pain relief but limited functional improvement. Radiographic evidence suggests potential aseptic loosening in many implants, even with low activity.

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    Area of Science:

    • Orthopedic Surgery
    • Rheumatology
    • Biomedical Engineering

    Background:

    • Severely deformed patients often undergo multiple joint replacements due to inflammatory arthritis.
    • Rheumatoid arthritis, juvenile rheumatoid arthritis, ankylosing spondylitis, and osteoarthritis are common indications for hip and knee arthroplasty.
    • Long-term outcomes and implant survival rates in this specific patient population require further investigation.

    Purpose of the Study:

    • To evaluate the long-term outcomes of bilateral hip and knee arthroplasty in severely deformed patients.
    • To assess pain relief, functional improvement, and implant survival rates.
    • To identify factors correlating with improved ambulatory and functional outcomes post-surgery.

    Main Methods:

    • A retrospective follow-up study of 26 patients with bilateral hip and knee arthroplasty.
    • Mean follow-up duration of 6.8 years.
    • Analysis of pain levels, ambulatory status, functional capacity, and radiographic evidence of implant loosening.

    Main Results:

    • Consistent and substantial pain relief was achieved in most patients.
    • Functional and ambulatory improvements were limited and correlated only with preoperative function and a combined hip/knee flexion of at least 190 degrees.
    • While 89% of implants were clinically stable, radiographic review revealed impending aseptic loosening in 12 patients (9 acetabular, 3 femoral, 5 tibial components).

    Conclusions:

    • Bilateral hip and knee arthroplasty provides significant pain relief for severely deformed patients but offers limited functional gains.
    • Preoperative joint mobility is a key predictor of functional improvement.
    • A significant proportion of implants show radiographic signs of aseptic loosening, necessitating close monitoring despite low patient activity levels.

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