Fig. 16.

Partial intrasubstance tears and tendinosis of the gluteus medius in a 57-year-old female with lateral hip pain after THA, US ordered to evaluate for pseudotumor. AP radiograph of the pelvis (A) shows the right THA with a cerclage cable along the proximal femoral metaphysis. Long-axis US images (B) demonstrate thickening, irregularity, and small anechoic clefts within the gluteus medius tendon (arrowheads), consistent with partial intrasubstance tears and tendinosis. A few of the proximal fibers (arrows) appear intact