Shoulder discomfort can be linked to dysfunction of the second rib mobility. There is a potential because of the referred pain coming from the second rib that with mobiliziation of the region can lead to pain alleviation in the shoulder.

Lumbar spine manipulation is a manual therapy technique in which a high-velocity, low amplitude force is applied to the lumbar vertebrae with the goal of reducing pain and improving function. It is often referred to as “back cracking” by patients as a joint cavitation, or audible “pop”. Nonthrust techniques, on the other hand, while also targeted at mobilizing spinal segments to restore optimal functioning are applied with a low velocity force. Both thrust and nonthrust techniques are often used for pain relief, but the specific mechanism behind their analgesic effects remains to be fully understood.