of circumferential beams 60 joined to a pair of axial beams 62 in a generally rectangular frame pattern the inner ends of the first and second segments 38 and 40 of the deformable struts 32 are attached to the mid points of the circumferential beams 60 as best shown in fig5 these circumferential beams 60 may be torqued or twisted as the force distribution pad 36 moves radially outwardly the circumferential beams 60 thus act as torsion u201c spring u201d s to help control lateral deflection of the deformable struts in specific embodiments the first and second segments 38 and 40 of the deformable struts 32 may have bifurcations 64 at each end attached to the axial attachment points referring now to fig6 8 the scaffold 10 may be mounted on a balloon catheter 70 in particular scaffold 10 may be placed over a working or cylindrical area 72 of the balloon of the balloon catheter prior to inflation the catheter will typically include distal tip 76 a distal cone 78 a proximal cone 80 and a shaft 82 as shown in fig8 the center portions of the deformable struts 32 which carry the force distribution pads 36 may be pre shaped and or biased so that the center portions are slightly bent in a radially outward direction so that upon axial compression of the.