Q71.6

Clinical Causes: Genetic mutations or inherited genetic conditions Syndromic associations, such as EEC syndrome (ectrodactyly, ectodermal dysplasia, and cleft lip/palate) Environmental factors during pregnancy, although these are less common Random developmental anomalies with no clear cause

Key Symptoms: A deep cleft running through the middle of the hand Absence or underdevelopment of certain fingers (commonly the middle fingers) A claw-like appearance of the hand, often with a split between the fingers Potential joint deformities or anomalies in finger movement Associated limb abnormalities in some cases

Diagnosis Path: Diagnosis is primarily based on a thorough physical examination of the hand at birth. Imaging studies, such as X-rays, help to determine the specific bone and soft tissue abnormalities, assessing the extent of the malformation. Genetic testing might be recommended to identify underlying syndromes or mutations if indicated. Differential diagnosis involves ruling out other congenital hand deformities and syndromic conditions. Prenatal ultrasound can occasionally detect limb deformities before birth, enabling early counseling and management planning.

Treatment Protocols: Management of lobster-claw hand aims to improve both the functional capability and cosmetic appearance of the hand. It often involves a multidisciplinary approach, including reconstructive surgery, occupational therapy, and sometimes prosthetic fitting. Surgical procedures may be performed to close the cleft, reconstruct affected fingers, or improve hand stability and dexterity. The timing of surgery depends on the severity of the deformity and the child's growth. Regular follow-up is essential to monitor hand function and address any complications or additional procedures as the child develops. Additionally, therapy may include exercises to enhance mobility and strength, helping the individual gain independence in daily activities.