{"id":24007,"date":"2022-03-16T19:12:49","date_gmt":"2022-03-16T23:12:49","guid":{"rendered":"http:\/\/osteomag.ca\/fryettes-laws-of-spinal-motion\/"},"modified":"2024-02-26T10:05:00","modified_gmt":"2024-02-26T15:05:00","slug":"fryettes-laws-of-spinal-motion","status":"publish","type":"post","link":"https:\/\/osteomag.ca\/en\/fryettes-laws-of-spinal-motion\/","title":{"rendered":"Fryette&#8217;s laws of spinal motion"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #000000;color:#000000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #000000;color:#000000\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/osteomag.ca\/en\/fryettes-laws-of-spinal-motion\/#Introduction\" >Introduction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/osteomag.ca\/en\/fryettes-laws-of-spinal-motion\/#Law_of_neutrality\" >Law of neutrality<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/osteomag.ca\/en\/fryettes-laws-of-spinal-motion\/#Law_of_non-neutrality\" >Law of non-neutrality<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/osteomag.ca\/en\/fryettes-laws-of-spinal-motion\/#Compensation_law\" >Compensation law<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/osteomag.ca\/en\/fryettes-laws-of-spinal-motion\/#Osteopathy\" >Osteopathy<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Introduction\"><\/span><strong>Introduction<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Fryette&#8217;s Laws, or Fryette&#8217;s Principles, are a set of fundamental concepts in the field of osteopathy, providing an in-depth understanding of the movement of the vertebrae within the spine in various situations.&nbsp;They take their name from Dr. Harrison Fryette, an eminent American osteopath who developed these principles to enrich osteopathic practice.<\/p>\n\n\n\n<p>One of Fryette&#8217;s Laws concerns the movement of the vertebrae into a neutral position, where the spine is aligned in an anatomically correct posture.&nbsp;According to this law, lateral bending and rotation movements in this position are limited and occur in opposite directions.&nbsp;For example, if a vertebra undergoes lateral flexion to the right, the associated rotation will occur to the left, and vice versa.&nbsp;This relationship is important for osteopaths when evaluating spinal dysfunctions.<\/p>\n\n\n\n<p>Another Fryette&#8217;s Law concerns movements of the vertebrae in a non-neutral position, where slight flexion, extension, or rotation is present in the spine.&nbsp;In such situations, lateral bending and rotation movements are performed on the same side.&nbsp;For example, if a vertebra undergoes lateral flexion to the right, the associated rotation will also occur to the right.&nbsp;This law reflects the complex adjustments that osteopaths can apply to treat specific disorders.<\/p>\n\n\n\n<p>These Fryette principles provide crucial guidelines for osteopathic practitioners when evaluating and treating spinal imbalances.&nbsp;They are particularly applicable to regions of the spine where complex movements can influence the overall functionality of the musculoskeletal system.&nbsp;Understanding how the vertebrae respond in neutral and non-neutral positions allows osteopaths to design personalized treatment plans to restore proper alignment and mobility.<\/p>\n\n\n\n<p>In short, Fryette&#8217;s Laws, formulated by Dr. Harrison Fryette, are fundamental principles that guide osteopathic practice.&nbsp;They describe the complex relationships between lateral flexion and rotation movements of the vertebrae in neutral and non-neutral spinal positions.&nbsp;These laws are essential for accurate assessment of spinal dysfunctions and implementation of targeted therapeutic interventions aimed at restoring balance and functionality of the musculoskeletal system.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" width=\"250\" height=\"304\" src=\"https:\/\/osteomag.ca\/wp-content\/uploads\/2022\/01\/2022-01-29_9-27-21.jpg\" alt=\"\" class=\"wp-image-23642\" srcset=\"https:\/\/osteomag.ca\/wp-content\/uploads\/2022\/01\/2022-01-29_9-27-21.jpg 250w, https:\/\/osteomag.ca\/wp-content\/uploads\/2022\/01\/2022-01-29_9-27-21-66x80.jpg 66w, https:\/\/osteomag.ca\/wp-content\/uploads\/2022\/01\/2022-01-29_9-27-21-150x182.jpg 150w\" sizes=\"(max-width: 250px) 100vw, 250px\" \/><figcaption class=\"wp-element-caption\">Harrison Fryette, D.O. (1876-1960)<\/figcaption><\/figure>\n<\/div>\n\n\n<p>There are three Fryette&#8217;s laws:<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"premiere-loi-loi-de-la-neutralite\"><span class=\"ez-toc-section\" id=\"Law_of_neutrality\"><\/span>Law of neutrality<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>In neutral position, where the spine is in a normal anatomical position, lateral flexion and rotation movements are limited in the same direction.&nbsp;For example, if a vertebra flexes sideways to the right, the associated rotation also occurs to the right.&nbsp;This illustrates the concept of &#8220;neutral position&#8221; where movements are coupled in the same direction:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" width=\"203\" height=\"335\" src=\"https:\/\/osteomag.ca\/wp-content\/uploads\/2022\/01\/2022-01-29_10-03-00.jpg\" alt=\"\" class=\"wp-image-23645\" srcset=\"https:\/\/osteomag.ca\/wp-content\/uploads\/2022\/01\/2022-01-29_10-03-00.jpg 203w, https:\/\/osteomag.ca\/wp-content\/uploads\/2022\/01\/2022-01-29_10-03-00-48x80.jpg 48w, https:\/\/osteomag.ca\/wp-content\/uploads\/2022\/01\/2022-01-29_10-03-00-150x248.jpg 150w\" sizes=\"(max-width: 203px) 100vw, 203px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"deuxieme-loi-loi-de-la-non-neutralite\"><span class=\"ez-toc-section\" id=\"Law_of_non-neutrality\"><\/span>Law of non-neutrality<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>When the spine is in a non-neutral position (already flexed or rotated in one direction), the movements of lateral flexion and rotation are opposed.&nbsp;If a vertebra is flexed laterally to the right, the associated rotation will occur to the left.&nbsp;This reflects the concept that when the spine is not in a neutral position, the movements of lateral flexion and rotation are reversed.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" width=\"224\" height=\"335\" src=\"https:\/\/osteomag.ca\/wp-content\/uploads\/2022\/01\/2022-01-29_10-03-01.jpg\" alt=\"\" class=\"wp-image-23647\" srcset=\"https:\/\/osteomag.ca\/wp-content\/uploads\/2022\/01\/2022-01-29_10-03-01.jpg 224w, https:\/\/osteomag.ca\/wp-content\/uploads\/2022\/01\/2022-01-29_10-03-01-53x80.jpg 53w, https:\/\/osteomag.ca\/wp-content\/uploads\/2022\/01\/2022-01-29_10-03-01-150x224.jpg 150w\" sizes=\"(max-width: 224px) 100vw, 224px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"troisieme-loi\"><span class=\"ez-toc-section\" id=\"Compensation_law\"><\/span>Compensation law<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>When there is dysfunction in one region of the spine, adjacent vertebrae compensate by increasing their movement in the opposite direction.&nbsp;This occurs to maintain overall spinal functionality despite local dysfunction.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Osteopathy\"><\/span>Osteopathy<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>These laws are often used by osteopaths to assess and treat spinal dysfunctions and to understand how abnormal movements in one part of the spine can affect other segments.&nbsp;It is important to note that these principles are specific to the osteopathic approach and may not be universally accepted in other medical disciplines.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Fryette&#8217;s Laws are a set of three laws relating to spinal biomechanics named after Harrison Fryette, D.O. The laws are defined as a set of guiding principles used by osteopaths to recognize axial skeletal dysfunction. The first two laws apply only to the lumbar and thoracic regions, the third to the entire spine.<\/p>\n","protected":false},"author":1,"featured_media":24005,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"tdm_status":"","tdm_grid_status":"","iawp_total_views":8,"footnotes":""},"categories":[221],"tags":[],"class_list":{"0":"post-24007","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-spine"},"_links":{"self":[{"href":"https:\/\/osteomag.ca\/en\/wp-json\/wp\/v2\/posts\/24007","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/osteomag.ca\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/osteomag.ca\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/osteomag.ca\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/osteomag.ca\/en\/wp-json\/wp\/v2\/comments?post=24007"}],"version-history":[{"count":0,"href":"https:\/\/osteomag.ca\/en\/wp-json\/wp\/v2\/posts\/24007\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/osteomag.ca\/en\/wp-json\/wp\/v2\/media\/24005"}],"wp:attachment":[{"href":"https:\/\/osteomag.ca\/en\/wp-json\/wp\/v2\/media?parent=24007"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/osteomag.ca\/en\/wp-json\/wp\/v2\/categories?post=24007"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/osteomag.ca\/en\/wp-json\/wp\/v2\/tags?post=24007"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}