Which condition is characterized by crepitus with movement and bony enlargement of joints?

Osteoarthritis is characterized by crepitus with movement and bony enlargement of joints due to the degeneration of cartilage and formation of bone spurs or osteophytes. In this condition, the protective cartilage that cushions the ends of the bones wears down over time, leading to pain, stiffness, and decreased mobility. Crepitus, which is the sensation of grating or popping during movement, occurs as the roughened joint surfaces rub against each other. Furthermore, as the disease progresses, the joint may develop visible bony enlargements known as nodes, which can be felt and seen at the affected joints, particularly in the hands. These features distinctly differentiate osteoarthritis from other conditions such as rheumatoid arthritis, which is primarily inflammatory and can involve different joint changes, fibromyalgia, which is characterized by widespread musculoskeletal pain without specific joint changes, and acute gout, which typically involves sudden and severe episodes of pain without the bony enlargement noted in osteoarthritis.