Fryette's Laws of Spinal Motion: Difference between revisions
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Fryette's Laws is a set of three laws pertaining to skeletal anatomy named after Harrison Fryette, D.O. The laws are defined as a set of guiding principles used by practitioners of osteopathic medicine to discriminate between dysfunctions in the axial skeleton. The first two laws solely apply to the lumbar and thoracic spinal regions, but the third applies to the entire vertebral column.<br> | Fryette's Laws is a set of three laws pertaining to skeletal anatomy named after Harrison Fryette, D.O. The laws are defined as a set of guiding principles used by practitioners of osteopathic medicine to discriminate between dysfunctions in the axial skeleton. The first two laws solely apply to the lumbar and thoracic spinal regions, but the third applies to the entire vertebral column.<br> | ||
== History == | == History == | ||
The first two laws were developed by Dr. Fryette in 1918, and the third was developed by C.R. Nelson, D.O in 1948. | The first two laws were developed by Dr. Fryette in 1918, and the third was developed by C.R. Nelson, D.O in 1948.<br> | ||
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== The 3 Laws == | == The 3 Laws == | ||
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=== 1. First Law === | === 1. First Law === | ||
When the spine is in neutral, side bending to one side will be accompanied by horizontal rotation to the opposite side. | When the spine is in neutral, side bending to one side will be accompanied by horizontal rotation to the opposite side. | ||
=== 2. Second Law === | === 2. Second Law === | ||
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When the spine is flexed or extended (non-neutral), sidebending to one side will be accompanied by rotation to the same side. | When the spine is flexed or extended (non-neutral), sidebending to one side will be accompanied by rotation to the same side. | ||
=== 3. Third Law === | === 3. Third Law === | ||
When motion is introduced in one plane it will modify (reduce) motion in the other two planes. | When motion is introduced in one plane it will modify (reduce) motion in the other two planes. | ||
Revision as of 18:39, 18 March 2014
Introduction[edit | edit source]
Fryette's Laws is a set of three laws pertaining to skeletal anatomy named after Harrison Fryette, D.O. The laws are defined as a set of guiding principles used by practitioners of osteopathic medicine to discriminate between dysfunctions in the axial skeleton. The first two laws solely apply to the lumbar and thoracic spinal regions, but the third applies to the entire vertebral column.
History[edit | edit source]
The first two laws were developed by Dr. Fryette in 1918, and the third was developed by C.R. Nelson, D.O in 1948.
The 3 Laws[edit | edit source]
1. First Law[edit | edit source]
When the spine is in neutral, side bending to one side will be accompanied by horizontal rotation to the opposite side.
2. Second Law[edit | edit source]
When the spine is flexed or extended (non-neutral), sidebending to one side will be accompanied by rotation to the same side.
3. Third Law[edit | edit source]
When motion is introduced in one plane it will modify (reduce) motion in the other two planes.
