Figure 4.

Patient presenting with left buttock and groin pain. There is focal uptake of tracer in the superior aspect of the left acetabulum. On the single photon emission CT-CT, the focal uptake of tracer is in the superolateral aspect of the left hip, where the CT component shows articular and cystic changes in the acetabulum. There is also increased tracer uptake at left greater trochanter. The scan findings are consistent with degenerative changes at the hip. There is no evidence of significant facet joint inflammation in the lower spine, and the uptake at the left greater trochanter is suggestive of enthesopathy/trochanteric bursitis.