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The collar bones are often underdeveloped and malformed. The nails are flat, grooved, and dysplastic. High bone density, Acro-osteolysis and obtuse mandibular angle are the characteristic radiological findings of this disorder. [10] Pycnodysostosis also causes problems that may become evident with time.
Homocystinuria is the second most common cause of heritable ectopia lentis. Homocystinuria is an autosomal recessive metabolic disorder most often caused by a near absence of cystathionine b-synthetase. It is associated with intellectual disability, osteoporosis, chest deformities, and increased risk of thrombotic episodes.
Growth arrest lines, also known as Harris lines, are lines of increased bone density that represent the position of the growth plate at the time of insult to the organism and formed on long bones due to growth arrest. They are only visible by radiograph or in cross-section. The age at which the lines were formed can be estimated from a radiograph.
Fibrous dysplasia causes bone thinning [13] and growths or lesions in one or more bones of the human body. These lesions are tumor-like growths that consist of replacement of the medullary bone with fibrous tissue, causing the expansion and weakening of the areas of bone involved. Especially when involving the skull or facial bones, the lesions ...
Diagnosis is suspected based on symptoms and X-rays with confirmation by genetic testing. [4] Other conditions that can produce similar symptoms include mandibuloacral dysplasia, pyknodysostosis, osteogenesis imperfecta, and Hajdu-Cheney syndrome. [5] Treatment includes supportive measures such as a device to protect the skull and dental care. [5]
The mechanism behind how hypercalciuria causes increased bone resorption is still conflicting. A high animal protein diet causes increased bone resorption and bone loss rate. [8] The high level of calcitriol found in hypercalciuria patients mentioned earlier stimulates higher rates of bone resorption and lowers bone formation. [8]
Idiopathic osteosclerosis, also known as enostosis or dense bone island, is a condition which may be found around the roots of a tooth, usually a premolar or molar. [2] It is usually painless and found during routine radiographs as an amorphous radiopaque (light) area around a tooth.
Osteoporosis-pseudoglioma syndrome or OPGG is a rare genetic condition characterized by early-onset blindness and severe osteoporosis alongside seemingly random bone fractures. Signs and symptoms [ edit ]