Q71.81

Clinical Causes: Genetic factors or inherited conditions Disruptions during fetal development affecting limb formation Environmental factors impacting fetal growth (e.g., exposure to harmful substances) Congenital syndromes associated with limb abnormalities Unknown causes in some cases

Key Symptoms: Noticeably shorter upper limb compared to the opposite limb or standard proportions Limited range of motion in shoulder, elbow, or wrist joints Muscle weakness or decreased strength in the affected limb Potential deformities in bones or soft tissues Functional difficulties in performing daily activities Cosmetic concerns impacting psychological well-being

Diagnosis Path: Diagnosis is typically made through a physical examination at birth or during early childhood. Imaging tests, such as X-rays, help visualize bone structure and determine the extent of shortening. Additional assessments may include genetic testing if a syndromic condition is suspected. Early detection allows for planning appropriate interventions aimed at maximizing limb function and appearance. Differential diagnoses include other limb deformities and acquired injuries, which are distinguished based on clinical history and diagnostic imaging.

Treatment Protocols: Management strategies focus on improving limb function and appearance. Treatment options may include: - **Surgical interventions** to lengthen bones or correct deformities; - **Orthopedic devices** such as braces or prostheses to support function; - **Physical and occupational therapy** to enhance mobility, strength, and dexterity; - **Assistive devices** to help perform daily activities more comfortably; - **Psychological support** to help cope with aesthetic or social aspects. The specific approach depends on the severity of the shortening, the age of the patient, and associated conditions. A multidisciplinary team, including orthopedic surgeons, therapists, and specialists, is often involved in comprehensive care planning.