sacroiliac joint digital radiograph examination x-ray reveals preserved sacroiliac joints spaces and smooth articular surfaces,

accident anatomical anatomy arthritis articular back bone buttocks cartilage coccyx concept degeneration diagnosis digital disease dysfunction examination femur focus groin health hip human hurt iliac ilium illness inflammation inflammatory injury joint joints low lower medical orthopedic osteoarthritis pain painful patient pelvic pelvis physical preserved radiograph ray reveals sacro sacroiliac sacroiliitis sacrum scan selective sitting skeletal skeleton smooth spaces spine standing stiffness surfaces surgery trauma x-ray