Which of the following incisions is oblique?

The Kocher incision is considered an oblique incision because it is made at an angle to the midline of the body. This type of incision is typically utilized during surgeries involving the upper abdomen, particularly for accessing the gallbladder or right upper quadrant structures. The oblique nature of the incision allows for better visualization and access to the organs of interest while minimizing damage to surrounding tissues.

In contrast, other incisions have different orientations. For example, the epigastric incision is made horizontally or vertically through the upper abdomen, while the paramedian incision is made parallel to the midline but not at an angle, and the Pfannenstiel incision is a transverse incision that is commonly used for gynecological procedures. Each type of incision has specific uses based on the surgical approach required, but the distinguishing characteristic of the Kocher incision is its oblique angle relative to the body's midline.