Clinical effectiveness of incision-thread-drawing procedure for perianal abscess

Objective To compare the clinical effectiveness of incision-thread-drawing procedure and incision and drainage procedure in the treatment of perianal abscess.Methods Clinical data collected from 110 patients with perianal abscess were retrospectively analyzed.Forty-six cases were treated with incision-thread-drawing procedure(therapy group) and 64 with incision and drainage procedure(control group).Results Recurrence rate and incidence of anal fistula were 4%(2/46) and 4%(2/46) in therapy group,respectively,significantly lower than those in control group(19% and 23%,P0.05).Length for the wound surface healing and hospital stay was(20.4±0.9)days and(15.4±0.9) days in therapy group,respectively,significantly lower than that in control group [(28.4±0.9)days and(25.1±0.9) days,P0.05).No cases with anal incontinence,anorectal stenosis and anal deformation were found either in therapy group or in control group.No recurrence of perianal abscess was found and all patients showed normal anal function during two-year follow-up after treatment.Conclusion It is suggested that incision-thread-drawing procedure can be primarily performed in the treatment for perianal abscess,with fewer recurrence of abscess,lower incidence of anal fistula,shorter course and less pain.