Inflammation of a sacroiliac joint. Causes include ankylosing spondylitis, rheumatoid arthritis, Reiter’s syndrome or arthritis associated with psoriasis. The main symptom is pain in the lower back, buttocks, groin, and back of the thigh. Treatment is with nonsteroidal antiinflammatory drugs.
n. inflammation of the sacroiliac joint. Involvement of both joints is a common feature of ankylosing *spondylitis and associated rheumatic diseases, including *reactive arthritis and *psoriatic arthritis. The resultant low back pain and stiffness may be alleviated by rest, anti-inflammatory analgesics, or biological *disease-modifying antirheumatic drugs.
One of a pair of rigid joints on each side of the body that form an interface between the sacrum and the ilium. They can be strained, usually by childbirth or overstriding, causing pain in the lower back and buttocks. They can also become inflamed (see sacroiliitis.)... sacroiliac joint
arthritis associated with *psoriasis. It occurs in 5% of patients with psoriasis and may be painful and disabling. It often affects small joints, such as the terminal joints of the fingers and toes, the spine (*spondylitis), and sacroiliac joints (*sacroiliitis), or large joints, such as the knee.... psoriatic arthritis
n. inflammation of the synovial joints of the backbone. Ankylosing spondylitis is a *sero-negative arthritis; 90% of cases carry the tissue-type antigen HLA-B27 (see HLA system). Ankylosing spondylitis predominantly affects young adult Caucasian males and the inflammation affects the joint capsules and their attached ligaments and tendons, principally the intervertebral joints and sacroiliac joints (see sacroiliitis). The resultant pain and stiffness are treated by analgesics (including *NSAIDs), physiotherapy, and biological *disease-modifying antirheumatic drugs. The disorder can lead to severe deformities of the spine (see kyphosis; ankylosis) and the hip joint, in which case surgical correction or *arthroplasty may be required.... spondylitis
Health Encyclopedia