Which of the following best describes the properties of joints affected by arthrogryposis?

The properties of joints affected by arthrogryposis are best described as stable with a rigid structure. Arthrogryposis, or arthrogryposis multiplex congenital (AMC), is characterized by joint stiffness and limited range of motion due to muscle weakness and fibrous tissue replacement. As a result, the joints do not have the normal elasticity and flexibility typically observed in healthy joints.

In individuals with arthrogryposis, the rigidity leads to a decreased ability for the joints to move freely, leading to a stable joint position; however, this stability comes at the cost of normal mobility. Consequently, individuals may have joint deformities and may not be able to achieve full range of motion, but the joints themselves tend to be stable in the sense that they are less prone to dislocations typical of conditions characterized by hypermobility or laxity. This understanding emphasizes the distinction between joint stability and mobility in the context of arthrogryposis.

Options that suggest excessive flexibility or mobility do not align with the condition’s characteristics, and referring to joints as loose and frequently dislocated contradicts the inherent stability seen in arthrogryposis. Normal range of motion is also not attainable due to the limitations inherent in the disorder.