Final answer:
The loose packed position of the iliofemoral joint is a relaxed state with slightly flexed, abducted, and externally rotated hip, where there is less tension in the joint capsule and supporting ligaments.
Step-by-step explanation:
The loose packed position of the iliofemoral (hip) joint is typically achieved when the joint is not at its maximum extension or tension. While the standing position causes the supporting ligaments such as the iliofemoral, ischiofemoral, and pubofemoral ligaments to tighten, pulling the head of the femur into the acetabulum, the loose packed position is more relaxed. This position allows for a greater range of motion and is usually found when the hip is slightly flexed, abducted, and externally rotated. This is the position where there is the least amount of tension in the supporting ligaments and the joint capsule, providing space within the joint for the synovial fluid to move more freely.