My problem ,this is me.
CONTINUED SI INSTABILITY AND MISALIGNMENT BIOMECHANICALLY STRESSES THE:

hip
knee
ankle
lumbar spine
Pubic Symphasis

Continued SI joint instability will cause arthritis in the SI Joints and/or area. This results from the wearing down of the cartilage on the SI Joints from chronic dysfunctional movement (not gliding) within the SI Joints.

When a pelvis is out of alignment, the spine is out of alignment. When the spine is out of alignment, there are adverse effects on the neurological system. For example - nerves entering and exiting the spine may be compressed and thus unable to perform their function of ennervating the major organs to the full extent. Circulation and metabolism can be affected. Continued misalignment can cause knee and ankle problems. More weight will be placed on one hip than the other, causing more 'wear and tear' which can result in the need for hip replacement in the long term.

Chronic SI Instability is not a self-limiting problem and it left untreated, will cause an increasing number of problems across the body.

Above this condition says there are adverse effects on the NEUROLOGICAL SYSTEM.. For example - nerves entering and exiting the spine may be compressed and thus unable to perform their function of ennervating the major organs to the full extent.
Plus it can affect CIRCULATION.

http://www.maximumtrainingsolutions.com/Sacroiliac-Joint-Injury.html