What are common characteristics of arthrogryposis?

Arthrogryposis, also known as arthrogryposis multiplex congenita, is a congenital condition characterized by joint stiffness and muscle weakness. The essential features of this condition include rigid joints, which are due to limited movement in the joints during fetal development, leading to contractures. Individuals with arthrogryposis often present with multiple joint deformities, and their muscles can be underdeveloped or weak because of the lack of movement that typically stimulates muscle growth and development.

Weak muscles accompany the rigidity in the joints, which fundamentally impacts mobility and functional capabilities. This combination of joint rigidity and reduced muscle strength is critical in understanding the condition and managing treatment strategies aimed at improving function and mobility.

In contrast, the other options do not accurately describe arthrogryposis. Marked flexibility and strong muscles do not align with the typical presentation of the condition, nor does inflammation and muscle hypertrophy, which are associated with different musculoskeletal disorders. Rapid joint degeneration is also not characteristic of arthrogryposis; in fact, the condition reflects fixed joint deformities rather than degenerative processes.