Abstract: A prosthetic foot having a spring assembly with an anterior and posterior component, a snubber for limiting the movement of the spring assembly during assembly, and anterior and posterior shock absorbers provided between the components of the spring assembly and snubber. The arrangement of the posterior shock absorber, the spring assembly, and the snubber is such that ambulation results in the generation of a compressive force in the posterior shock absorber during a heel-strike phase and tensile force in the posterior shock absorber during a toe-off phase.

Abstract: An artificial leg is assembled from a thigh member and a selected one of a plurality of preformed modular endoskeletal shin members each having an identical knee support member and ankle attachment member but differing in length of shin tube. A cellular plastics cosmesis is moulded onto the shin member. A foot may be attached to the shin member with an intermediate disc bearing differentially spaced circumferential teeth on its upper and lower faces which locate in sockets in the ankle attachment member and in the foot to permit fine adjustment of the position of the foot relative to the shin member.

Abstract: A wheelchair has lateral frames each constituted by a prefabricated modular front frame unit and a prefabricated modular rear frame unit secured together against relative longitudinal movement. The front frame unit has a post from which upper and lower rail sections extend in engagement with rail sections secured to a rear post which acts as a wheel mounting tube. The rail sections are interlinked by a spacer tube which carries a pivot sleeve of a cross-brace member. The upper rail section carries a mounting socket for a prefabricated backrest tube. The frame components may be prefinished for local assembly and permit a wide range of wheelchairs of different length, width and backrest configurations to be manufactured from a restricted range of standard parts.

Abstract: Attachments are described for enabling small front wheels of wheelchairs to negotiate side-walk curbs or the like. An arcuate rocker end for engaging the curb is fixed to a strut pivoted above the wheel and held in a ready position, determined by engaging abutments, by a prestressed, i.e. strained, spring which is further strained when the rocker end engages a curb and the advancing wheelchair causes the strut to swing backwards lifting the wheel onto the side-walk, whereupon, the rocker end is free to return to the ready position. The rocker end may be manually shifted to an idle position in which it is firmly held by the spring. In one example, one of the abutment members, which is normally fixed, is withdrawn to enable the strut to be forced behind it, the member then being released to retain the rocker end in the idle position.