When we mention rheumatism, it usually brings to mind pain originating from muscles and joints. In fact, any type of pain stemming from muscles is colloquially referred to as rheumatism among the public.

Similarly, arthritis and rheumatism are used synonymously. Arthritis refers to the inflammation of joints due to various factors. Its advanced stages are also termed osteoarthritis. The term rheumatism, however, pertains more to muscles, the ligaments that connect joints, and the places  where muscles attach to the joints.

All types of arthritis and diseases originating  from soft tissues are categorized as rheumatic diseases. Arthritis pain is generally dull and aching. In some cases, arthritis can intensify, becoming debilitating and making the patient's life difficult. To understand arthritis and soft tissue rheumatism, it's beneficial to delve into the structure of the joints.

A joint is the meeting point where two bones come together. The endpoints of both bones are covered with cartilage, a tissue smoother and softer than bone. The role of cartilage is to reduce friction between the two bones.

There's also a fluid within the joint that lines its inner surface. The external surface of the joint is enveloped by a sheath called a capsule. Muscles and other ligaments attach to the joint, enabling its movement. If the cartilage surface deteriorates, joint fluid decreases, or the capsule thickens, the joints begin to show sensitivity and limited movement. This limitation in movement often comes with pain. Joints in different parts of the body can have varying characteristics. For instance, the hip joint or shoulder joint differs from finger, knee, or elbow joints.