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Without treatment, Crouzon syndrome can cause hearing and vision loss, exposure keratitis or conjunctivitis, drying of the cornea, hydrocephalus, sleep apnea, and breathing problems. [medical citation needed] To move the orbits forward, surgeons expose the skull and orbits and reshape the bone. To treat the midface deficiency, surgeons can move ...
The mutations responsible for Marfan syndrome weaken the zonules and cause them to stretch. The inferior zonules are most frequently stretched resulting in the lens shifting upwards and outwards, but it can shift in other directions as well. Nearsightedness (myopia), and blurred vision are common due to connective tissue defects in the eye. [18]
What causes flat feet and fallen arches? Fallen arches are a common cause of flat feet in adulthood. This occurs when a specific tendon in the foot, the posterior tibial tendon, degenerates and ...
Brachymetatarsia is a rare malformation that causes one or more toes to be abnormally short. The condition is characterized by a metatarsal arch shortness of more than 5 mm. The condition is more common in females, and the incidence reported in the literature ranges from 0.02% to 0.05%.
The height of a person's arch is determined by the height of the navicular bone. Collapse of the longitudinal arches results in what is known as flat feet. [5] A person with a low longitudinal arch, or flat feet will likely stand and walk with their feet in a pronated position, where the foot everts or rolls
Apert syndrome is a form of acrocephalosyndactyly, a congenital disorder characterized by malformations of the skull, face, hands and feet. It is classified as a branchial arch syndrome, affecting the first branchial (or pharyngeal) arch, the precursor of the maxilla and mandible.
Causes Mutations in the fibrillin-2 gene, in chromosome 5q23, or the fibrillin-1 gene, at chromosome 15q21.1 Arachnodactyly (" spider fingers ") is a medical condition that is characterized by fingers and toes that are abnormally long and slender, in comparison to the palm of the hand and arch of the foot.
Lujan–Fryns syndrome (LFS) is an X-linked genetic disorder that causes mild to moderate intellectual disability and features described as Marfanoid habitus, referring to a group of physical characteristics similar to those found in Marfan syndrome.