**Question:** True regarding Pfannenstiel incision is all except:

A. Umbilical hernia
B. Incision through rectus abdominis muscle
C. Limited utility in obese patients
D. Short operating time

**Core Concept:**
Pfannenstiel incision is a type of incision used in surgery, particularly in cesarean sections. It is a midline incision made through the skin, subcutaneous tissue, and fascia, beginning inferior to the umbilicus and extending to the pubic symphysis. The Pfannenstiel incision is named after its inventor, Dr. Hans Pfannenstiel, who first described it in 1950. This type of incision has several advantages and disadvantages compared to other incision types.

**Why the Correct Answer is Right:**
The Pfannenstiel incision is not associated with umbilical hernia. Umbilical hernia occurs when the abdominal contents protrude through a defect in the umbilicus, which is not a feature of the Pfannenstiel incision.

**Why Each Wrong Option is Incorrect:**

A. Umbilical hernia: This option is incorrect because Pfannenstiel incision does not cause or increase the risk of umbilical hernia development.

B. Incision through rectus abdominis muscle: This option is incorrect because the Pfannenstiel incision avoids the rectus abdominis muscle, unlike some other incision types that directly transect the muscle.

C. Limited utility in obese patients: This option is incorrect because, while the Pfannenstiel incision may be more challenging in obese patients due to the increased tissue thickness, it is still a viable incision choice for cesarean sections in the appropriate patient population.

D. Short operating time: This option is incorrect because the Pfannenstiel incision's operating time is not solely determined by the incision type itself. The operating time depends on factors like surgeon experience and complexity of the surgery, not just the incision type.

**Clinical Pearl:**
Understanding the anatomy of the Pfannenstiel incision helps in selecting the most appropriate incision type for cesarean section procedures. While considering patient factors like body habitus, the Pfannenstiel incision's selection is crucial to minimize complications and ensure optimal patient outcomes.