Orbital fissure inferior

The inferior orbital fissure is a gap between two bones of the skull: the frontal and the sphenoid. This gap is one of the important elements of the structure of the skull, since many important anatomical structures pass through it, including blood vessels, nerves and muscles.

The inferior orbital fissure has its own characteristics in different anatomical areas. In the area of ​​the bridge of the nose it is divided into two parts: upper and lower. The upper part passes between the frontal and ethmoid bones, and the lower part passes between the sphenoid and temporal bones.

It is important to note that the inferior orbital fissure can be changed as a result of various diseases and injuries. For example, with osteoporosis or other bone diseases, it may become less pronounced or even disappear completely. Also, after trauma to the skull, the orbital fissure may be damaged and require medical intervention.

In general, the inferior orbital fissure is an important element of the structure of the skull and can be subject to changes depending on various factors. Therefore, if you notice any changes in this area, you should consult a doctor for diagnosis and treatment.

The inferior orbital fissure is a slit-like space between the base of the nose and the upper part of the orbit. It is necessary for the movement of air from the middle ear to the nasal cavity, as well as for access to the fiber of the eye and paranasal sinuses.

The inferior orbital fissure can be identified visually on the patient’s face: when the eyelids are closed, it appears as a light stripe directly above the upper eyelid. To determine its size, the following basic characteristics are used: the width of the gap should be from 2 to 3 mm, the length - up to 5 mm. The length of the gap is determined as follows: with the middle finger of the right hand, press the edge of the upper eyelid, and with the thumb of the left hand, press the lower lacrimal punctum (this allows you to reduce pressure in the facial tissues). After this, the mouth opens wide, the teeth on the left side move inward, the tongue rests on the upper palate and oropharynx. If you palpate the edge of the frontal muscle at the base of the nose (where the superior rectus muscle is attached), you will feel areas of bone tissue that connect to each other - these are the edges of the upper jaw and the lower wall of the orbit. While inhaling slowly and deeply, compare them to note the depth of the gap. After measuring its length and width, they begin to mark the gap for surgery. Typically a dental or silicone template is used.

The orbital fissure can be changed due to various diseases of the nose or paranasal sinuses. Typically, nasal breathing difficulties are accompanied by the following: