Effect of sacroiliac manipulation on postural sway in quiet standing: a randomized controlled trial.

"Conflicts of interest The authors declare no conflicts of interest."

"For this 2-arm double blinded randomized clinical trial, 78 male and female patients (age range: 20–50 years old) were initially recruited. The patients had lower back pain of 3 months’ duration, and were recruited from rehabilitation clinics affiliated with Shiraz University of Medical Sciences, Shiraz, Iran. They entered the study if they had a Numeral Rating Scale score of 6 or lower and an Oswestry Disability Index of 20–40 with no history of treatment during the previous 6 months. Patients were excluded if they had any history of spinal surgery, hip pathology, vestibular pathology, arthritis, or neurological central nervous system pathology. Sacroiliac dysfunction was verified by the patient's history and physical examination. The patient's history consisted of pain location, pain with postures/activities that might stress the SI joint (e.g. turning in bed, getting out of the bed, stepping up with the affected leg, standing from sitting) and any direct/indirect trauma to SI joint (e.g. stepping of a curb, fall on buttocks, strain and twisting maneuvers). For the physical examination, an expert physical therapist evaluated all patients. The presence of SI joint dysfunction was confirmed by a group of different tests (i.e. Yeoman's test, Gaenslen's sign, the FABER test, the compression test and thigh thrust) with high reliability and validity., , , , If at least 3 of the tests were positive, then the patient was entered into the study after he or she signed an informed consent form developed by the Medical Ethics Committee of Shiraz University of Medical Sciences, Shiraz, Iran (approval number CT_P_91_4512). This trial was prospectively registered at www.irct.ir, trial registration number # IRCT2014072715932N8."