Polydactyly syndrome middle ray duplication
Polydactyly Syndrome Middle Ray Duplication is a rare congenital condition characterized by the duplication of the middle rays of the hands, feet, or both, often leading to the presence of extra fingers or toes. This condition falls under the broader category of polydactyly, which refers to the occurrence of more than the usual number of fingers or toes. Middle ray duplication is a specific subtype of polydactyly that affects the central digits of the limbs.
Causes and Genetics[edit | edit source]
The exact cause of Polydactyly Syndrome Middle Ray Duplication is not fully understood, but it is believed to involve genetic mutations that affect limb development during the embryonic stage. It can occur as an isolated condition or as part of a syndrome involving other anomalies. Genetic factors may follow an autosomal dominant inheritance pattern, where a single copy of the altered gene in each cell is sufficient to cause the disorder.
Symptoms and Diagnosis[edit | edit source]
Individuals with Polydactyly Syndrome Middle Ray Duplication typically present with extra digits in the central part of their hands or feet. These additional digits can vary in size and functionality, ranging from small, non-functional nubbins to fully formed and operational digits. Diagnosis is usually made through physical examination and imaging studies, such as X-rays, which can reveal the extent of bone and soft tissue involvement.
Treatment[edit | edit source]
Treatment for Polydactyly Syndrome Middle Ray Duplication often involves surgical intervention to remove the extra digits and, if necessary, reconstruct the affected hand or foot to improve functionality and appearance. The timing and approach to surgery may vary depending on the complexity of the duplication and the presence of any associated conditions.
Prognosis[edit | edit source]
The prognosis for individuals with Polydactyly Syndrome Middle Ray Duplication largely depends on the severity of the duplication and the success of surgical treatment. With appropriate medical and surgical management, most individuals can achieve good functional and cosmetic outcomes.
See Also[edit | edit source]
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Contributors: Prab R. Tumpati, MD