“…The failure to detect mechanical pathology in the SIJ, apart from fractures and inflammatory disease has been shown for CT [10,11], MRI [12,13], scintigraphy using tomography [14], and ultrasound [15]. As a result, the diagnosis of SIJ dysfunction must be based on history and physical examination and this has been established with high levels of evidence and reproducibility in the literature [3,12,[16][17][18][19][20][21][22][23]. Patterns of pain and/or functional disturbances relating to PGP must be reproducible by specific clinical tests [4,19].…”