Langer mesomelic dysplasia

Langer mesomelic dysplasia (LMD) is a rare congenital disorder characterized by severe shortening or malformation of the long bones in the arms and legs. It is a type of skeletal dysplasia, a group of disorders that affect the growth and development of the bones.

Etiology

LMD is caused by mutations in the SHOX gene, which is involved in the growth and development of the bones. These mutations result in a loss of function of the SHOX gene, leading to the characteristic features of LMD.

Clinical Features

Individuals with LMD typically have severe shortening of the long bones in the arms and legs, particularly the ulna and fibula. Other features may include short stature, limited range of motion in the elbows, and abnormalities of the hands and feet.

Diagnosis

Diagnosis of LMD is typically based on the clinical features and confirmed by genetic testing to identify mutations in the SHOX gene.

Treatment

There is currently no cure for LMD. Treatment is focused on managing the symptoms and improving quality of life. This may include physical therapy, occupational therapy, and surgical interventions to address bone abnormalities.

Prognosis

The prognosis for individuals with LMD varies depending on the severity of the symptoms. With appropriate management, many individuals with LMD can lead productive lives.

See Also

• Skeletal dysplasia
• Congenital disorder
• SHOX gene

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