The prescribed duration for wearing a non-invasive bone growth stimulator varies significantly based on the specific anatomical location of the fracture, the severity of the non-union or spinal fusion, and the attending physician's clinical instructions. Typically, daily treatment sessions range from 20 minutes to several hours, and the overall course of therapy often continues for three to six months—or sometimes longer—until follow-up X-rays or clinical evaluations confirm successful bone healing and solid structural fusion.