Foundation flaws in this paper are to not recognise (at least) these two variables in the subjects of this research.
1. No distinction between pathologies is made. This is fundamental if any pronouncements of therapeutic efficacy are intended. The paper refers to “gluteal bursitis”. While this undoubtedly occurs, it is rare. Most pain in the trochanteric region is an entheseopathy of the insertion of the great abductors.
2. Differentiating subject obesity. Target accuracy in the lean is not difficult. However in the obese the desirable level of accuracy is impossible without imaging guidance.
Competing interests: No competing interests