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Related Experiment Videos

Keyhole deformity. Fact and fiction.

W P Mazier

    Diseases of the Colon and Rectum
    |January 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

    The keyhole deformity is rare after anal ulcer surgery and often does not cause anal incontinence. This study investigated its occurrence and significance in patients with anal incontinence.

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    Area of Science:

    • Colorectal Surgery
    • Anorectal Disorders
    • Surgical Outcomes

    Background:

    • The keyhole deformity is a recognized anorectal condition.
    • Its association with anal incontinence and post-surgical outcomes requires clarification.

    Purpose of the Study:

    • To determine the incidence of keyhole deformity after surgery for ulcer-in-ano.
    • To assess the surgical significance and prevalence of keyhole deformity.
    • To evaluate its association with anal incontinence.

    Main Methods:

    • Retrospective study over 16 years at Ferguson Clinic.
    • Inclusion of patients with chief complaints of anal incontinence.
    • Analysis of patients undergoing fistula surgery, specifically posterior midline transsphincteric fistulas.

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    Main Results:

    • Seven patients had questionable keyhole deformities; three likely had classic defects.
    • Only two deformities were linked to ulcer-in-ano surgery; one required repair, another had rectal prolapse.
    • Ten of 77 patients with posterior midline transsphincteric fistulas recovered fully without permanent sphincter issues.

    Conclusions:

    • Keyhole deformity is a rare occurrence, particularly after ulcer-in-ano surgery.
    • The deformity is not consistently associated with anal incontinence.
    • Successful recovery is possible following sphincter-severing fistula surgery.