What are the worst injuries for pack animals typically found below?

Knees are considered the worst injuries for pack animals primarily because they bear a significant amount of weight and impact during movement, especially when traversing uneven or rugged terrain. Injuries to the knees can severely limit the animal's ability to walk, carry load, or perform necessary tasks, thus impacting their overall functionality and well-being.

Knee joints are subjected to high levels of stress and strain, and any injury can lead to chronic pain and arthritis, which would affect the animal's mobility for the long term. Unlike other areas of the body, knee injuries can lead to debilitating conditions that not only affect the specific joint but can also lead to compensatory damages in other areas, complicating the animal's health further.

Moreover, while injuries to the hips, above the elbows, and neck can certainly occur, they tend to have different implications and mechanisms of injury. For example, hip injuries can affect the animal's general locomotion but do not typically have the same severity or impact as knee injuries on their ability to function efficiently as pack animals.