Which term indicates a condition where joints may become stiff due to aging?

The term that indicates a condition where joints may become stiff due to aging is arthritis. Arthritis is a general term that refers to inflammation of the joints, and it commonly involves pain, swelling, and stiffness. As people age, the cartilage that cushions the joints can deteriorate, leading to osteoarthritis, the most prevalent form of arthritis. This deterioration contributes to stiffness and discomfort in the joints, making it more difficult for individuals to move freely.

In contrast, stenosis refers to the narrowing of spaces in the spine, which can lead to nerve compression but does not specifically indicate joint stiffness related to aging. Sclerosis is a term that means hardening of tissue and can relate to various medical conditions but does not primarily address joint stiffness. Immobility is a condition where a person cannot move freely or at all, but it is a symptom rather than a specific cause of joint stiffness due to aging. Therefore, arthritis is the most accurate term to describe joint stiffness that can result from aging.