Ectrodactyly-polydactyly syndrome

Ectrodactyly-polydactyly syndrome (Orphanet code 1892) is an extremely rare congenital limb malformation disorder characterized by the co-occurrence of ectrodactyly (split hand/foot malformation, also known as lobster claw deformity) and polydactyly (the presence of extra digits) in the same individual or within the same family. These two limb anomalies are typically considered opposite ends of the spectrum of digital ray formation defects, making their combination particularly unusual. The condition primarily affects the skeletal and musculoskeletal systems, specifically the hands and feet, and is apparent at birth. Clinical features include absence or deficiency of central digits (ectrodactyly) in some limbs, while other limbs or even the same limb may show supernumerary digits (polydactyly). The severity and distribution of malformations can vary considerably between affected individuals, even within the same family. Some patients may also exhibit syndactyly (fusion of digits). The condition can affect hand and foot function depending on the extent of the malformations. There is no cure for ectrodactyly-polydactyly syndrome. Management is primarily supportive and surgical, focusing on improving hand and foot function and cosmetic appearance. Reconstructive surgery may be performed to separate fused digits, remove extra digits, or improve the functional anatomy of affected hands and feet. Occupational therapy and physical therapy may also be beneficial. Genetic counseling is recommended for affected families to discuss recurrence risks and inheritance patterns.

Common questions about Ectrodactyly-polydactyly syndrome