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The Stanmore hinged knee arthroplasty.

A W Lettin, L J Deliss, J S Blackburne

    The Journal of Bone and Joint Surgery. British Volume
    |August 1, 1978
    PubMed
    Summary
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    The Stanmore hinged total knee replacement effectively relieved pain and improved function in most patients with severe knee arthropathy. While serious complications were rare, deep infections led to amputation or ankylosis in some cases.

    Area of Science:

    • Orthopedic Surgery
    • Biomedical Engineering
    • Reconstructive Surgery

    Background:

    • The Stanmore hinged total knee replacement was developed in 1969 to address severe destructive arthropathy.
    • This study evaluates the outcomes of the initial 100 consecutive Stanmore hinged total knee replacement surgeries.

    Observation:

    • The study followed 100 patients who underwent Stanmore hinged total knee replacement.
    • The average follow-up period was two and a half years post-surgery.

    Findings:

    • Pain relief was achieved in 94% of patients.
    • Improved range of motion was observed in 67% of cases.
    • Prosthesis insertion consistently restored knee stability and corrected deformities (valgus/varus).
    • Flexion contractures showed improvement, though not always complete correction.

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  • Serious complications were infrequent; deep infections occurred in 3 cases, resulting in 2 amputations and 1 fibrous ankylosis.
  • No mechanical failures of the prosthesis components were reported.

    • Implications:

    • The Stanmore hinged total knee replacement demonstrated significant efficacy in pain reduction and functional improvement for severe knee arthropathy.
    • The prosthesis reliably restored stability and corrected alignment, with a low incidence of mechanical failure.
    • While generally safe, the risk of deep infection necessitates careful patient selection and management strategies.