Abstract: An orthopaedic appliance which enables paralytics to stand erect has a fabric garment formed in separate pieces to be tightly wrapped around body parts located between joints the pieces having an inflatable support structures in the form of vertical tubes and devices connecting garment pieces located on opposite sides of a body joint in the form of a separate row of rigid parallel pins attached to the inflatable structure each garment piece and a pivot which can be hydraulically or otherwise driven, interconnecting the rows of pins. The inflatable tubes are located in elongate fabric sheaths and the pins are inserted in fabric sheaths defined between the tube sheaths so that when the tubes are inflated they clamp the pins between them.