Laurin-Sandrow syndrome

Laurin-Sandrow syndrome (LSS), also known as mirror hands and feet with nasal defects or tetramelic mirror-image polydactyly, is an extremely rare congenital malformation syndrome characterized by a distinctive pattern of limb and facial anomalies. The hallmark feature of this condition is mirror-image polydactyly (duplication of digits in a symmetric, mirror-like pattern) affecting both the hands and feet. In the hands, there is typically ulnar dimelia (duplication of the ulnar ray) with absence or hypoplasia of the radius and thumb, resulting in hands that appear as mirror images with multiple fingers but no thumb. Similarly, the feet show fibular dimelia with mirror-image duplication of toes and absence of the tibia. Affected individuals also commonly present with nasal anomalies, including a broad or bifid nose, absent nasal septum, or nasal hypoplasia. The syndrome affects the musculoskeletal system primarily, with significant impact on limb structure and function. Additional features may include absence or hypoplasia of the tibia, syndactyly (fusion of digits), and abnormalities of the long bones. The nasal and midface structures are also involved. The condition is present at birth and is typically recognized in the neonatal period based on the striking limb malformations. There is no cure for Laurin-Sandrow syndrome, and management is primarily supportive and symptomatic. Treatment typically involves orthopedic interventions, which may include surgical correction of limb deformities to improve function, prosthetic devices, and physical therapy. Surgical reconstruction of nasal defects may also be considered. A multidisciplinary approach involving orthopedic surgeons, plastic surgeons, and rehabilitation specialists is recommended to optimize functional outcomes and quality of life.

Common questions about Laurin-Sandrow syndrome