Research has demonstrated that many individuals with Crohnâs ileitis share a genetic mutation that may play a significant role in disease development. A hypersensitive immuno-response to a pathogenic presence, such as bacteria, within the gastrointestinal tract is also suspected of contributing to the disease's onset.
Secondary osteoarthritis occurs less frequently than primary (also known as idiopathic) osteoarthritis. Primary osteoarthritis means that there is no known cause for the joint breakdown.
Osteoarthritis (OA) is a common type of arthritis in which there is a gradual loss of cartilage from the joints (figure 1). Common OA symptoms include pain, stiffness, some loss of joint motion, and changes in the shape of affected joints.steoarthritis (OA) is a common type of arthritis in which there is a gradual loss of cartilage from the joints (figure 1). Common OA symptoms include pain, stiffness, some loss of joint motion, and changes in the shape of affected joints.