28-year-old female with tailbone pain, evaluate for ligament tear There is mild edema type signal in the subcutaneous fat immediately dorsal to the coccyx which could conceivably represent mild inflammation, but this is equivocal. Marrow signal intensity within the coccyx itself is within normal limits. There is intermediate signal intensity within the sacrum, lower lumbar spine and pelvis which presumably reflects residual red marrow. The posterior sacrococcygeal ligament appears intact.Degenerative disc disease affects L4-L5 with dorsal protrusion of the disc and central T2 hyperintensity, presumably representing an annular fissure and appearing similar to the prior exam. A trace amount of free fluid is seen within the pelvis, within normal limits for age.
1.Minimal edema-type signal in the soft tissues posterior to the coccyx could conceivably represent a mild bursitis, however the coccyx itself appears normal.2.Mild bulging/protrusion with annular fissuring at L4-L5.