What is a common feature of osteogenesis imperfecta?

A common feature of osteogenesis imperfecta is the presence of brittle bones that fracture easily. This condition, often referred to as "brittle bone disease," is characterized by a genetic disorder affecting collagen production, which is crucial for bone strength and structure. As a result, individuals with osteogenesis imperfecta have bones that are fragile and prone to fractures, even from minor impacts or stresses that would not typically cause injury in a person with healthy bone density.

The other options do not accurately represent the primary characteristics of osteogenesis imperfecta. Absent vertebral arches are not typically associated with this condition, as the primary issues relate to the quality of bone rather than vertebral structure. Paralysis of the lower limbs and loss of motor function are also not characteristic features; instead, osteogenesis imperfecta primarily affects bone integrity rather than muscular function or nerve control. Thus, the correct answer highlights the most significant and defining characteristic of the disorder.