Multiple epiphyseal dysplasia-severe proximal femoral dysplasia syndrome

Multiple epiphyseal dysplasia with severe proximal femoral dysplasia (MED-SPFD) is a rare skeletal disorder characterized by abnormal development of the epiphyses (the growing ends of bones), with particularly pronounced involvement of the proximal femur (the upper part of the thigh bone near the hip joint). This condition belongs to the broader group of multiple epiphyseal dysplasias, which are a family of skeletal dysplasias affecting cartilage and bone development. The disorder primarily affects the musculoskeletal system, leading to significant hip joint abnormalities that may resemble severe Legg-Calvé-Perthes disease or avascular necrosis of the femoral head. Key clinical features include short stature, early-onset hip pain, waddling gait, and progressive joint stiffness. The proximal femoral epiphyses are severely dysplastic, often showing flattening, fragmentation, or irregular ossification on radiographic imaging. Other epiphyses throughout the body may also be affected, though typically less severely than the hips. Patients may develop early-onset osteoarthritis, particularly of the hip joints, which can significantly impair mobility and quality of life. Knee and ankle involvement may also occur, with irregular epiphyseal ossification visible on X-rays. There is currently no cure for this condition. Treatment is primarily supportive and symptomatic, focusing on pain management, physical therapy to maintain joint mobility and muscle strength, and orthopedic interventions as needed. Total hip replacement may become necessary in adolescence or early adulthood due to progressive degenerative changes. Regular orthopedic monitoring is recommended to track disease progression and plan appropriate interventions. Genetic counseling is advised for affected individuals and their families.

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