A patient support apparatus for spinal conditions comprising a knee support 10,12, a patient torso support 32,60 for supporting a patient in the kneeling position, means 32 for supporting a patient's torso in a range of inclinations below horizontal in order to cause a mass of the patient's torso to tension the spine. The torso support 32,60 is supported by a radius arm 50 that is pivoted below the torso support 32,60, is free to swivel about a fixed joint 52 located forward of, and below the level of, the knee support 10,12, and is inclined upwardly forwardly towards a ring pad support 60 for a patient's head.