Orthopedic appliance includes that elongated rigid or semirigid strut assemblies (106,108), arc envelope (104) are pivotably secured to strut assemblies, and band (114) is fixed on set and to form adjustable circle configurations in connection. Tensioning apparatus (606) it is mountable on set (104) and with band (114) with multiple previously selected levels between increasing amount adjustment tensioning apparatus (606), the second end (114) for making the first end of belt (114) be fastened to tensioning apparatus (606) is coupled to band set (104). A kind of textile components (112) are connected to and strut assemblies 106,108) and with there are multiple layers in flexible stay (240). The textile components (112) are suitable for only located in the segment of ring perimeter with the adjustable circumference circuit of formation and strut (240).
