Final answer:
The patient is placed in a supine position for a McBurney's incision, which allows optimal access for appendectomies, particularly in cases of gangrenous inflammation and infection.
Step-by-step explanation:
When a McBurney's incision is made, the typical position in which the patient is placed is supine, with the upper limbs, including palms, touching sides and lower limbs touching at sides. McBurney's incision is often used for appendectomies and the supine position provides the surgeon with optimal access to the appendix, which is located in the lower right quadrant of the abdomen. This positioning is crucial for the surgical team to safely and effectively perform the procedure, especially when dealing with gangrenous inflammation and infection.