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Surface replacement of the hip joint

S Tanaka

    Clinical Orthopaedics and Related Research
    |July 1, 1978
    PubMed
    Summary

    This study evaluated a novel total hip resurfacing prosthesis. Results showed excellent pain relief and improved mobility for patients undergoing hip replacement surgery.

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    Area of Science:

    • Orthopedic Surgery
    • Biomaterials Science
    • Medical Device Engineering

    Background:

    • Development of a novel total hip resurfacing prosthesis combining a high-density polyethylene socket and a stainless steel cup.
    • Distinction in fixation: bone cement secures the socket to the acetabulum, while no cement is used between the cup and the femoral head.

    Purpose of the Study:

    • To assess the efficacy and outcomes of a specific total hip resurfacing prosthesis.
    • To evaluate subjective and objective results in patients undergoing hip replacement with this device.

    Main Methods:

    • Surgical implantation of 57 total hip replacements using the socket-cup prosthesis in 54 patients between April 1974 and October 1977.
    • Follow-up examination of 36 patients (37 replacements) aged 40-68 years, with follow-up durations from 6 months to 3.5 years.
    • Analysis of patient-reported outcomes including pain, walking ability, and activities of daily living.

    Main Results:

    • Excellent overall subjective and objective results reported for the hip resurfacing prosthesis.
    • Significant pain relief achieved in 97.3% of patients.
    • Marked improvement in walking ability (86.1%) and activities of daily living within 6 months for most patients.

    Conclusions:

    • The evaluated total hip resurfacing prosthesis demonstrates high efficacy in improving patient function and alleviating pain.
    • The prosthesis offers a viable surgical option for various hip disorders, leading to substantial functional recovery.

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