Lloyd-Davies position is a medical term referring to a common position for surgical procedures involving the pelvis and lower abdomen. The majority of colorectal and pelvic surgery is conducted with the patient in the Lloyd-Davis position.
It is also known as the Trendelenburg position

Trendelenburg position

In the Trendelenburg position the body is laid flat on the back with the feet higher than the head by 15-30 degrees, in contrast to the reverse Trendelenburg position, where the body is tilted in the opposite direction. This is a standard position used in abdominal and gynecological surgery...

with legs apart. The basic angle is a 30-degree Trendelenburg with the hips flexed at 15 degrees; this can be adjusted with leg supports.

Advantages

1. The position gives good exposure and minimizes pressure areas for longer surgeries.
2. It has less side effects of neuropathies as compared to other positions.

Disadvantages

1. It can precipitate compartment syndrome in muscles of calves after 5 or more hours of surgery.