A muscle imbalance invariably leads to the pelvis moving into the wrong position causing it to either tilt forward or back, up or down, or rotate. These 5 positions will have a flow on effect to the spine which will upset the position or spacing of the vertebrae and put pressure on the discs or nerves leading to back pain or even worse, sciatica. Imbalances and compensations continue to build until there is no potential left and something has to give and it’s often at the weakest point, the joint.