Physical Therapy Assistant Practice Exam 2025 – Complete Prep Guide

Legg-Calve-Perthes disease is characterized by the degeneration of the femoral head as a result of interrupted blood supply, which leads to avascular necrosis. This condition typically affects children and can result in pain, limping, and reduced range of motion in the hip joint. The loss of blood supply causes the bone tissue to weaken and sometimes collapse, making it crucial to manage the condition early to avoid long-term complications, such as osteoarthritis.

In contrast, Osgood-Schlatter disease involves inflammation of the knee joint or its attachment due to repetitive stress and is not related to blood supply issues of the femoral head. Congenital hip dysplasia refers to a developmental condition where the hip joint is improperly formed, rather than being a result of blood supply interference. Patellofemoral syndrome involves the knee, resulting from improper tracking of the patella, and does not relate to degeneration of the femoral head or disturbance in blood supply.