Herrmann–Opitz arthrogryposis syndrome
Herrmann–Opitz Arthrogryposis Syndrome is a rare genetic disorder characterized by multiple joint contractures found throughout the body at birth. The term "arthrogryposis" describes the presence of multiple joint contractures affecting two or more areas of the body. A "contracture" in this context refers to the permanent fixation of a joint in a bent (flexed) or straightened (extended) position, which can impair the movement of the affected joint. Herrmann–Opitz Arthrogryposis Syndrome is a specific subtype of arthrogryposis, distinguished by its genetic cause and associated symptoms.
Etiology[edit | edit source]
The exact genetic cause of Herrmann–Opitz Arthrogryposis Syndrome remains largely unknown. However, like many forms of arthrogryposis, it is believed to result from a combination of genetic and environmental factors that affect muscle development or joint formation in utero. The condition is thought to be inherited in an autosomal recessive manner, meaning that an individual must inherit two copies of the mutated gene, one from each parent, to be affected.
Symptoms[edit | edit source]
Individuals with Herrmann–Opitz Arthrogryposis Syndrome present with multiple joint contractures at birth. These contractures can affect any joint but are most commonly seen in the arms, legs, hands, and feet. The severity and locations of these contractures can vary widely among affected individuals. In addition to joint issues, some individuals may have muscle weakness, developmental delays, and difficulties with feeding and breathing.
Diagnosis[edit | edit source]
Diagnosis of Herrmann–Opitz Arthrogryposis Syndrome is primarily based on clinical examination and the presence of characteristic symptoms. Genetic testing may be helpful in confirming the diagnosis, especially in cases where the genetic cause is known. Prenatal diagnosis may be possible through ultrasound, where contractures or other abnormalities may be detected before birth.
Treatment[edit | edit source]
There is no cure for Herrmann–Opitz Arthrogryposis Syndrome, and treatment focuses on managing symptoms and improving the quality of life for affected individuals. Physical therapy and occupational therapy are critical components of treatment, aiming to increase joint mobility and muscle strength. In some cases, surgery may be necessary to correct joint deformities or to release contractures. Orthopedic devices, such as braces or splints, may also be used to support joint function.
Prognosis[edit | edit source]
The prognosis for individuals with Herrmann–Opitz Arthrogryposis Syndrome varies depending on the severity of the contractures and the presence of other associated symptoms. With early and ongoing intervention, many individuals can achieve improved mobility and function. However, some may experience significant physical limitations throughout their lives.
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Contributors: Prab R. Tumpati, MD