24-year-old female with a prior episode of right hip osteomyelitis in 2012 with new right hip pain and fever for 2 days. The right hip appears normal. There is a trace amount of fluid seen within the joint, appearing similar to the other side, but no joint effusion is evident. There is no enhancement to suggest a synovitis nor is there edema/enhancement of the surrounding soft tissues of the right hip. The bone marrow signal intensity of the right hip is normal. There is decreased signal intensity along the right sacroiliac joint corresponding to sclerosis seen on radiographs which may be degenerative in etiology or reflect prior inflammatory arthritis, but currently there is no fluid within the sacroiliac joint or within the adjacent soft tissues. There is edema within the paraspinal musculature, left greater than right, which is nonspecific. We see no fracture or intramuscular fluid collections. There is also edema within the subcutaneous fat, posteriorly, which is not necessarily of any current clinical significance. There is a right adnexal cyst which is likely physiologic in a patient of this age.
1. No evidence of septic arthritis or osteomyelitis of the right hip.2. Osteoarthritis of the right sacroiliac joint which may reflect prior inflammatory arthritis, but this is equivocal. Other findings as described above.