Which position is also known as the jackknife and is used during proctologic procedures?

• A. Knee-Chest
• B. Proctologic position
• C. Sims
• D. Lithotomy

Answer: (B)

In proctologic work, you position the patient to give the surgeon the best access to the anal region. The jackknife is a prone setup where the person lies face down with the hips flexed and the buttocks elevated, forming a sharp angle that exposes the perineal area. This arrangement is the one most commonly described as the proctologic position, since it directly facilitates anorectal procedures like hemorrhoidectomy. The knee-chest position also exposes the perineum but is a different configuration, Sims is a side-lying position used for other types of pelvic work, and lithotomy is a legs-elevated position used mainly in gynecologic or urologic settings. So, the proctologic position best matches the jackknife usage in anorectal surgery.