Thursday, March 4, 2010
Axis of Rotation (lumbar spine)
Every joint has an axis of rotation that allows optimal loading of the joint. When things such as tight muscles, ligaments, adhesions, weakness (think stabilize) then when the joint moves there will be a change in the axis of rotation or motion creating abuse to the joint or surrounding structures. Lets take the lumbar spine for an example. If the joint capsule or interspinous ligaments or multifidi are tight then when you look at the joint move into flexion the axis or rotation changes from right in the center of disc to more anterior, this puts the disc at more risk. Think of a nut cracker. This is why sometimes repeated flexion can lead to degenerative disc disease. This can also happen when the psoas isn't strong enough to stabilize the anterior lumbar on forward bending. So if you have been struggling with some disc pain for awhile and pain with forward bending, it would be good to have a soft tissue treatment for the joint capsules, multifidi and interspinous ligaments of the lumbar spine. It will make bending forward so much more friendly.