A brace 10 for a physically disabled person has a central support element 17,18 with one or more attachment devices 12,13 for connection to a person's upper body, and a pair of leg braces 47a,b articulately connected to opposite sides of the central support element via respective hip joint elements 41. Each leg brace comprising leg attachment means 14 and a thigh member 42 connected between the hip joint element 41 and a knee joint 43, and a lower leg member 44 connected between the knee joint 43 and an ankle joint 45. Each leg brace comprises a twisting element (60 figure 16； 61 figure 18) configured to arrange a hip joint element plane of rotation (Ps figure 17) and a knee joint plane of rotation (P1 figure 17) in different planes. The twisting clement may comprise a twisted portion (60 figure 16) or a twist controller (61 figure 18), the latter having means (62. 68. 72, 75 figure 21) configured to allow the knee joint plane of rotation to be set at one or more of a plurality of predetermined twisting angles. A walker (figure 4) is also claimed which comprises an undercarriage (20) having a brace support member (28) and a brace (10) for a physically disabled person. The brace support member (28) comprises a brace coupling unit (30) having a housing (35 figure 7) with an upwardly oriented opening (38).
