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UCLA anatomic total shoulder arthroplasty

H C Amstutz, A L Sew Hoy, I C Clarke

    Clinical Orthopaedics and Related Research
    |March 1, 1981
    PubMed
    Summary
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    The UCLA total shoulder arthroplasty effectively relieves pain and restores function, especially in patients with intact rotator cuffs. For those with deficient rotator cuffs, it offers functional use but with limited range of motion.

    Area of Science:

    • Orthopedic Surgery
    • Biomedical Engineering

    Background:

    • Total shoulder arthroplasty aims to restore shoulder joint mobility and provide durable component fixation.
    • The UCLA prosthesis is designed as a nonconstrained system for typical arthritic conditions.
    • A superior glenoid subacromial rim can be added for patients with deficient rotator cuffs.

    Purpose of the Study:

    • To evaluate the clinical outcomes of the UCLA total shoulder arthroplasty.
    • To assess pain relief, range of motion, and functional outcomes in patients.
    • To determine the effectiveness of the prosthesis in patients with and without rotator cuff deficiencies.

    Main Methods:

    • A prospective study following 11 patients who underwent UCLA total shoulder arthroplasty.
    • Follow-up duration ranged from 1.5 to 3.5 years.

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  • Outcomes were assessed based on pain relief, range of motion, and functional ratings.

    • Main Results:

    • Complete pain relief was achieved in 9 out of 11 patients.
    • Excellent functional results were observed in five patients, particularly those with osteoarthritis and intact rotator cuffs.
    • Patients with deficient rotator cuffs experienced functional use but not full range of motion.

    Conclusions:

    • The UCLA total shoulder arthroplasty demonstrates significant efficacy in pain reduction and functional restoration.
    • Rotator cuff status is a key determinant of range of motion outcomes.
    • The prosthesis, with modifications like the subacromial glenoid component, is valuable for patients with rotator cuff deficiencies, though further study is needed for hooded components.