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Secondary operations after knee joint replacement

A Ahlberg, A Lundén

    Clinical Orthopaedics and Related Research
    |May 1, 1981
    PubMed
    Summary
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    Secondary operations for knee joint arthroplasties occurred in 12% of cases, with higher rates in osteoarthritis patients and those with obesity or prior surgery. Loosening and infection were key reasons for reoperation.

    Area of Science:

    • Orthopedic surgery
    • Arthroplasty research
    • Biomedical engineering

    Background:

    • Knee joint arthroplasty is a common procedure for debilitating knee conditions.
    • Understanding reoperation rates and indications is crucial for improving patient outcomes.
    • Early arthroplasty series provide valuable long-term data on surgical complications.

    Purpose of the Study:

    • To analyze the frequency and indications for secondary operations after knee joint arthroplasty.
    • To identify risk factors associated with the need for reoperation.
    • To evaluate the outcomes of various reoperation procedures.

    Main Methods:

    • Retrospective review of 254 knee joint arthroplasties performed between 1972 and 1977.
    • Analysis of reoperation rates based on diagnosis (rheumatoid arthritis vs. osteoarthritis).

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  • Categorization of reoperation indications, prosthesis types, and surgical outcomes.

    • Main Results:

    • A 12% reoperation rate was observed across 254 knee arthroplasties.
    • Osteoarthritis patients (18%) had higher reoperation rates than rheumatoid arthritis patients (6%).
    • Loosening (14 cases) and infection (7 cases) were primary indications; hinge prostheses showed higher reoperation frequency.

    Conclusions:

    • Factors such as osteoarthritis, obesity, and prior surgery significantly increase reoperation risk.
    • Reoperation procedures varied, including prosthesis exchange, arthrodesis, and amputation.
    • Outcomes of reoperations were mixed, with 13 good, 12 fair, and 6 bad results.