The Lateral Pterygoid Muscle: Its Significance in Craniomandibular Dysfunction

Sarkin JM Dig Chiro Econ Jan/Feb 1987;29(4)120-22

The lateral (external) pterygoid is a muscle of mastication that is extremely important in cranio-mandibular dysfunction. When the lateral pterygoid is shortened and hypertonic, it can produce internal derangement of the temporomandibular joint (TMJ) joint noises, limited and deviated mouth opening, referred myofascial trigger point pain to the TMJ and maxilla, and the cranial primary respiratory dysfunction. Through careful consultation and examination, the problematic lateral pterygoid can be uncovered and subsequently treated and managed. Resolution of lateral pterygoid dysfunction is crucial in establishing optimal craniomandibular function.

© SOTO-USA 2025 - All rights are reserved by SOTO-USA to the electronically printed material herein.

This SOT Literature Page and all its contents herein are published by SOTO-USA solely for the purpose of education. All rights reserved by SOTO-USA to accept, reject or modify any submission for publication. The opinions stated in the electronically printed material herein are those of the authors and do not necessarily represent the opinions of SOTO-USA or other individuals associated with SOTO-USA. SOTO-USA does not guarantee or make any representation that the printed material contained herein is valid, reliable or accurate. SOTO-USA does not assume any responsibility for injury arising from any use or misuse of the printed material herein. The printed material contained herein is assumed to be from reliable sources and there is no implication that the printed material herein present the only, or the best methodologies or procedures for the care or treatment of conditions discussed. It is incumbent upon the reader to verify the accuracy of any diagnosis and treatment information contained herein, and to make modifications as new information and/or research arises.

Inside SOTO–USA

17th Annual Clinical Symposium

May 12-14, 2016
New Orleans, Louisiana

8th Annual SOT Research Conference







May 13-14, 2016
New Orleans, Louisiana

Meet Dr. DeJarnette - Developer of SOT

Vist the wisdom, skill, and humor of Dr. DeJarnette the developer of Sacro Occipital Technique.

The History of Sacro Occipital Technique

Major Bertrand DeJarnette, DC, was a renowned inventor, engineer, osteopath, and chiropractor throughout his long and productive career.