Figure 3
Schematic view of different grades of enthesopathy of the gluteus medius insertion as presented in longitudinal US scans. Gmed = gluteus medius muscle, ap = apophysis. Grade 0: normal enthesis. The fascia is a thin echorich line. Grade 1 enthesopathy: hypoechoic fascial thickening at the insertion. Grade 2 enthesopathy: small cranial triangular hypoechoic area in the muscle between fascia and iliac crest. Grade 3 enthesopathy: large hypoechoic area in the muscle with caudal extension.