Abstract: An apparatus for treating spinal vertebrae of patients that requires therapeutic mechanical effects. This apparatus permits a surgeon to readily adjust the overall dimensions of the apparatus and its structural members according to the needs of the patient by telescopically moving the upper and lower frame members with an adjustable connector. A supporting assembly rigidly mounts the apparatus to suitable parts of the patient's body and it is also flexible enough to adjust to the peculiarities of each patient by permitting the lower frame to be selectively mounted to the supporting assembly. Also, in areas where the apparatus cannot be secured through the supporting assembly to the sacrum bone, wires are used to secure it to the vertebrae.