The suprahyoid muscles
have an important role in deglutition, participate in motor reflexes, and lower and stabilize the mandible (9,10).
They analysed the EMG potentials of the anterior temporalis, masseter, and suprahyoid muscles
at rest position and during MVC on parafilm.
The fatigue that TMJ patients so often complain of can be attributed, in part, to the effect of gravity on forward head posture, which causes an increase in forward tension creating a compressive force on soft tissues, apophyseal joints, and posterior surfaces of vertebral bodies with excessive lengthening of anterior neck flexors and tightening of neck extensors.30 TMJ fatigue can been seen also in cases with shorting of suboccipital and suprahyoid muscles
with subsequent elevation of the hyoid bone itself.28 Urbanowicz30 illustrated 10-points physical therapy plan for negating the postural effects of increasing vertical dimension and forward head posture.
Traditional Shaker exercise facilitates physiologic changes in the suprahyoid muscles
. Due to its close proximity with the pharyngeal muscles, there is a probability that it augments the pharyngeal muscles and thereby pharyngeal peristalsis.
Among the factors pointed out are changes in lung capacity and strength, non-coordination between breathing / apnea / swallowing / respiration stages, reduction of the propulsion force of the bolus, increasing in the duration of the bolus stay in the pharyngeal phase of swallowing, changes in the hyoid bone mobility, and weakness of the suprahyoid muscles
, which play a key role in generating the movement of the hyoid bone in the upper and anterior directions.
In transmandibular approach, incision is given at the level of mandible, suprahyoid dissection is carried out by lifting the suprahyoid muscles
, the base of the tongue is pulled down and the lingual thyroid is brought out of the swelling and can further be excised.
The infrahyoid and suprahyoid muscles
are partially dissected off to enable the advancement of the hyoid complex.
Another method used in the indirect evaluation of tongue strength is the surface electromyography (EMGs) of the suprahyoid muscles
. The examination captures the potentials of action generated in muscular contractions and allows the comparison of these values in relation to the amplitude and duration of the movement (21-25).
INTRODUCTION: Infrahyoid and suprahyoid muscles
play a significant role in deglutition and speech by moving hyoid bone and thyroid cartilage.
Due to clinical problems of dysphagia and the need to use techniques that can accelerate the process of rehabilitation of swallowing, it is necessary to verify quantitatively and objectively the effects of NMES on suprahyoid muscles
and consequently in swallowing for patients with neurological impairment.
As a result, there was found that during saliva swallowing is the full participation of suprahyoid muscles
, confirming the findings of Cunningham and Basmajian (1969) , Lehr et al.
Evaluating the structural properties of suprahyoid muscles
and their potential for moving the hyoid.