What is the anatomy of the temporomandibular joint?

What is the anatomy of the temporomandibular joint?

The temporomandibular joint (TMJ) is formed by the articulation of the mandible and the temporal bone of the cranium. It is located anteriorly to the tragus of the ear, on the lateral aspect of the face.

Where is the temporomandibular joint located?

TMJ disorders affect the temporomandibular joint, located on each side of your head in front of your ears. A soft cartilage disk acts as a cushion between the bones of the joint, so the joint can move smoothly.

How is Stylomandibular ligament formed?

Stylomandibular ligament. The stylomandibular ligament (STML) arises from the styloid process of the temporal bone up to the posterior margin of the jaw or the jaw angle. It is considered a thickening of the deep cervical fascia (in particular of the parotid fascia). It serves to limit excessive protrusion of the jaw.

Can you feel the Stylomandibular ligament?

the preauricular area (external ear) mandibular angle (jaw), pain radiating to the neck, shoulder, and eye on the same side. palpation of the stylomandibular ligament, gently pressing on it, will cause pain.

What are the ligaments of the temporomandibular joint?

Four ligaments support the TMJ: the collateral, temporomandibular, stylomandibular, and sphenomandibular ligaments. The TMJ is vascularized by the deep auricular, superficial temporal, and anterior tympanic arteries.

What is the action of the Sphenomandibular muscle?

The sphenomandibular acts with the other elevators of the mandible in terms of the protrusion, retrusion, and lateral movement, remaining passive during the opening of the mouth.

Where does the sphenomandibular ligament originate from?

The sphenomandibular ligament (SML) develops from Meckel’s cartilage and is flat and thin [1]. The superior attachment site of the ligament is the spine of the sphenoid bone [2] and the inferior attachment is on and around the lingula of the mandible.

Can you feel the stylomandibular ligament?

How common is Eagle syndrome?

Eagle’s syndrome (ES) is a rare entity that is not commonly suspected in clinical practice. The prevalence of individuals with an elongated styloid process in the adult population is estimated to be 4% with a very small percent of these individuals reported to be symptomatic.

What is the stylomandibular tunnel?

The stylomandibular tunnel is a space between the mandibular ramus and the styloid process / stylohyoid ligament. It separates the (prestyloid) parapharyngeal space from the parotid space.

What is the stylomandibular ligament?

System: Head & Neck Section: Anatomy Tag: Synonyms: URL of Article The stylomandibular ligament is one of the two extrinsic ligaments of the mandible, the other being the sphenomandibular ligament.

What is the anatomy of the heart?

This page will introduce you to the anatomy of the heart. The heart has five surfaces: base (posterior), diaphragmatic (inferior), sternocostal (anterior), and left and right pulmonary surfaces. It also has several margins: right, left, superior, and inferior:

What is the heart blood flow diagram?

Let’s put into words the heart blood flow diagram: The right atrium receives deoxygenated blood from the superior and inferior venae cavae and coronary sinus The right atrium contracts pushing blood through the right atrioventricular valve into the right ventricle.