The submandibular glands lay superficial to the suprahyoid and
infrahyoid muscle groups and were covered by the inferior portion of the parotid gland.
Outcome of surgery can be predicted as cervicofacial lesions have more success rate than any other parts and
infrahyoid lesions have more success rate than suprahyoid.
Relationship between the electrical activity of suprahyoid and
infrahyoid muscles during swallowing and cephalometry.
Located superficially in the
infrahyoid neck, the normal thyroid gland (Figure 1) is composed of right and left lobes joined centrally at their inferior thirds by the isthmus, a thin band of thyroid parenchyma that crosses the midline anterior to the trachea.
The electrodes were attached to the surface of the muscle belly of the submental muscles (SMs) (on both sides of the midline of the neck, between the submental border and the hyoid bone) and the
infrahyoid muscles (IMs) (approximately 2 cm below the hyoid bone on both sides of the midline of the neck).
The laryngeal and
infrahyoid muscles and their innervation.
The
infrahyoid flap or the neurovascular myocutaneous
infrahyoid flap (NMIHF) was first used by Wang and Shen (1) in 1980 for defect reconstruction after the surgical treatment of tongue cancer.
Postsurgery CT scan showed a hypodense, solid,
infrahyoid mass extending to the superior mediastinum with surrounding adenopathy [Figure 3].
downward and backward movement to increased inframandibular soft tissue tension (supra/
infrahyoid muscles and fascia).
The lesion were removed with sectioning, the remaining bone cortexes was preserved and the elastics are used to minimize the mouth opening by diminishing the tension forces (18) on the mandible by presenting a force opposite of
infrahyoid muscles which are active during mouth opening.
The hypoglossal nerve is the twelfth cranial nerve, and is a pure motor nerve that is involved in the movements of the tongue and
infrahyoid muscles.
Although neck tenderness is commonly observed, it is not a reliable sign of impaction.2 Within the regions of the upper aerodigestive tract, palatine tonsil, posterior tongue and vallecula are common sites of suprahyoid impaction and piriform fossa, larynx, cricopharyngeus, cervical oesophagus and thoracic oesophagus are less common sites of
infrahyoid impaction.3