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Related Experiment Videos

Failure of the Jonas prosthesis.

E A Tawil, J G Gregory

    The Journal of Urology
    |April 1, 1986
    PubMed
    Summary

    The Jonas silicone-silver penile prosthesis can fracture, leading to device failure and rigidity loss. X-rays are unreliable for diagnosing these fractures, necessitating clinical evaluation.

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    Area of Science:

    • Urology
    • Biomedical Engineering
    • Medical Device Technology

    Background:

    • The Jonas silicone-silver penile prosthesis is a medical device used for treating erectile dysfunction.
    • Device integrity is crucial for patient outcomes and satisfaction.

    Purpose of the Study:

    • To evaluate the incidence and diagnosis of wire fractures in the Jonas silicone-silver penile prosthesis.
    • To assess the reliability of radiographic imaging in detecting these fractures.

    Main Methods:

    • A review of 27 patients who received the Jonas silicone-silver penile prosthesis.
    • Clinical evaluation including penile rigidity assessment and physical examination.
    • Radiographic imaging (X-ray) for suspected fractures.
    • Surgical exploration and device explantation for definitive diagnosis.

    Main Results:

    • Four previously reported cases of prosthesis fracture were identified.
    • Of the remaining 23 patients, 7 showed signs of fracture (decreased rigidity, audible/palpable crackling, or X-ray evidence).
    • Two patients with suspicious X-rays and one with negative X-rays but reduced rigidity underwent explantation, revealing multiple wire fractures.
    • Radiographs of fractured prostheses demonstrated limited diagnostic accuracy.

    Conclusions:

    • Wire fractures are a complication associated with the Jonas silicone-silver penile prosthesis.
    • Clinical assessment of penile rigidity and physical findings are important indicators of prosthesis failure.
    • Radiography has limited reliability in diagnosing wire fractures of this penile prosthesis.

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