Open Euclidean Anomaly Surgery

If the abnormality of the eustachian tube is not treated by non-surgical treatment, it is feasible to release the muscle of the sacral muscle. The Eustachian tube is also known as the Audiotory eustachian tube. The anterior wall of the tympanic membrane corresponds to the anterior superior quadrant of the tympanic membrane and opens inward, downward and forward to the side wall of the nasopharynx. It has a total length of about 35 to 39 mm and is composed of a bone and a cartilage. The bone is near the tympanic segment, accounting for 1/3 of the total length of the tube. The cartilage is near the nasopharyngeal end, accounting for 2/3 of the total length of the tube. It consists of 3 to 4 groove-like fibrocartilage, and the anterior lateral cartilage plate is more It is short, the posterior medial side is long, and there are no cartilage on the lower part and the outer side. It is surrounded by a fibrous connective tissue membrane and forms a fissure-like tube type, which is often closed. The tympanic opening of the Eustachian tube is called the mouth of the tympanic drum or the tympanic cavity. The opening of the nasopharyngeal end is called the pharyngeal opening and is located on the outer side wall of the nasopharyn From the tympanic cavity, the pharyngeal opening is forward, inward, and downward, and the tube is at an angle of about 40° to the horizontal plane, and is at an angle of about 45° to the sagittal plane. The tympanic cavity is approximately 2.0 to 2.5 cm above the pharyngeal opening. The widest part of the bone is the tympanic cavity. It has a funnel shape, an inner diameter of about 4.5 mm, the narrower inward, and the narrowest part of the intersection of the bone and the cartilage, called the narrow part, and the inner diameter is about 1.0 to 2.0 mm. From the isthmus, it gradually widens inward, reaching the widest point of the pharynx (triangular or elliptical), about 9.0mm long. In the cartilage of the eustachian tube, the levator muscle and the eustachian tube pharyngeal muscle are attached to the posterior lip, and the sacral muscle is attached to the anterior lip of the pharynx, so when yawning or doing swallowing, the three muscles The contraction opens the mouth of the pharynx, thereby adjusting the pressure of the tympanic chamber and maintaining the balance between the pressure on both sides of the tympanic membrane. The eustachian tube of the child is shorter than the adult, the lumen is relatively large, the isthmus is wider, not curved and like a straight line, at an angle of 10° to the horizontal, close to the level, so the inflammation of the nose and throat is easily invaded by this tube. Tympanum. The superficial sulcus of the granule is located on the inner side of the tympanic membrane half-tube and the eustachian tube, and is parallel to each other. It is the marker of the position of the tympanic membrane half-tube and the eustachian tube. The eustachian tube is located in front of the internal carotid artery. The eustachian tube stenosis is adjacent to the spine hole, the foramen ovale, and the external port of the internal carotid artery. The spine hole is below the outside of the gorge, the foramen ovale is in front of the lower part of the gorge, and the internal carotid artery is outside the gorge. The scorpion scorpion muscle and the squat levator muscle are the markers for finding the isthmus of the eustachian tube. The sphenoid bone spine is the protrusion of the outer side of the spur hole, which is easy to touch, and is adjacent to the isthmus of the eustachian tube. It can also be used to find the isthmus of the eustachian tube. Important sign. The sphenoid spine is located behind the narrow mouth of the eustachian tube. Due to the complex relationship between the anatomical parts of the eustachian tube, especially when the eustachian tube is completely blocked, it is extremely difficult to perform eustachian tubeplasty. It is one of the important conditions for tympanoplasty, hearing reconstruction, and normal function of the eustachian tube. Treatment of diseases: abnormal open mouth of eustachian tube Indication 1. Soft tissue defects around the pharynx or scar adhesions cause difficulty in closure. 2. The pharyngeal muscles are paralyzed or atrophied, causing the throat to not close. 3. Tension muscle contraction. Surgical procedure 1. At the junction of the soft and soft palate, a curved incision is made inside the posterior aspect of the third molar. 2. Separate the wing protrusion, use a small chisel to cut off from the root, and dissipate the sacral muscles of the sacral muscles that are circumscribed at the outer and rear sides, and then peel off and transfer to the anterior medial aspect of the pterygoids to relax the sacral muscles. 3. The tendon is fixed and sutured in front of the winglet with a silk thread to maintain the relaxation of the throat and maintain the closed state of the eustachian tube for a long time.

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