The shoulder is one of the most commonly injured joints in the body, and this is no coincidence. It is one of the most mobile joints in the body, with a huge range of motion, and many muscle attachments.

The knee is the most common location of injury in skiers, and the ACL is injured in approximately 50% of all serious knee injuries that require hospitalization (Posch et al., 2020). The ACL or anterior cruciate ligament is a necessary stabilizer of the knee. Its job is to keep the lower leg bone, the tibia, from sliding forwards while we are walking or running.