Fryette laws
Page created: March 18, 2021
Fryette laws
Chronic Week 1
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Raynaud phenomenon
Fryette laws
Diagnosing cervical somatic dysfunction
Spurling test
Cervical spine counterstrain
Cervical spine facilitated positional release
Cervical spine HVLA
Cervical muscle energy treatment
Cervical spine myofascial release
Other cervical spine treatments
Diagnosing lower limb somatic dysfunction
Special tests for the lower limb
Lower limb counterstrain
Lower limb HVLA
Lower limb muscle energy treatment
Lower limb myofascial release
Other lower limb treatments
Diagnosing lumbar spine somatic dysfunction
Lumbar muscle energy treatment
Lumbar spine counterstrain
Lumbar spine facilitated positional release
Lumbar spine HVLA
Lumbar spine myofascial release
Other lumbar spine treatments
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Diagnosing cranial somatic dysfunction
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Diagnosing pelvis somatic dysfunction
Pelvis counterstrain
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Diagnosing rib somatic dysfunction
Rib counterstrain
Rib HVLA
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Other rib treatments
Diagnosing sacral somatic dysfunction
Sacrum counterstrain
Sacrum muscle energy treatment
Sacrum myofascial release
Diagnosing thoracic spine somatic dysfunction
Thoracic spine counterstrain
Thoracic spine facilitated positional release
Thoracic spine HVLA
Thoracic muscle energy treatment
Thoracic spine myofascial release
Other thoracic spine treatments
Diagnosing upper limb somatic dysfunction
Special tests for the upper limb
Upper limb counterstrain
Upper limb HVLA
Upper limb muscle energy treatment
Upper limb myofascial release
Other upper limb treatments
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Notes
Introduction to OMM
Fryette laws
These laws were specifically written only about the thoracic and lumbar spine. These laws mostly hold true for the cervical spine as well, although there are a few exceptions as noted on the “Diagnosing cervical somatic dysfunction” learn page.
LAW #1
When the spine is in a neutral position, side bending and rotation occur in opposite directions. For example, if a person were to side bend their lumbar spine to the left, the bodies of the L1–L5 vertebrae would rotate to the right. Law #1 typically applies to a group of vertebrae. An example of a “type 1 somatic dysfunction” is L1–L3 N SR RL.
LAW #2
When the spine is in a nonneutral position (either flexed or extended), side bending and rotation occur in the same direction. For example, if a person were to rotate to the left at T2 in a flexed or extended position, T2 would also side bend to the left. Law #2 typically applies to a single vertebra. An example of a “type 2 somatic dysfunction” is T9 E SR RR.
LAW #3
Initiating movement at a vertebral segment in one plane of motion will limit the mobility of the segment in the other two planes of motion. For example, side bending to the left will limit the ability to rotate and flex / extend.
Author: Arman Israelyan, OMS-III
Editor: Matt Lipinski, DO
Illustrator: Jillian Dunbar
Editor: Robyn Hughes, MScBMC
Key Takeaways
The Fryette laws are a set of three laws regarding skeletal anatomy that guide osteopathic medicine practitioners to identify various dysfunctions in the axial skeleton. These laws are named after Harrison Fryette, D.O, an osteopathic practitioner who established them.
The first law states that when the spine is in a neutral position, side bending to one side is accompanied by rotation on the opposite side. The second law states that when the spine is in a non neutral position, such as flexed or extended position, side bending to one side is accompanied by rotation on the same side. The third law states that if motion is initiated at a vertebral segment in one plane, it will limit the mobility of the segment in the other two planes.