Which anatomical landmarks are used when applying a Pelvic Compression Device (PCD)?

The appropriate anatomical landmarks for applying a Pelvic Compression Device (PCD) are the greater trochanters. These landmarks are significant because the greater trochanters are prominent bony structures located at the femur, just below the hip joint. When positioning a PCD, it is crucial to target these points to effectively stabilize the pelvis and minimize hemorrhage in cases of pelvic fractures. Applying compression over the greater trochanters helps to reduce the volume of the pelvic cavity, thereby controlling bleeding from major vessels that may be compromised during trauma.

The other options, while anatomical landmarks, do not provide the necessary positioning for achieving the desired effect of the PCD. The shoulder girdles are too superior and do not assist in pelvic stabilization. The iliac crests are also relevant anatomical features but are not the primary points of compression targeted with a PCD. The patellae are located in the knee and are unrelated to pelvic compression applications. Understanding the correct anatomical landmarks is essential for effective trauma management in a tactical environment.