BS ISO 13405-2:2015 pdf free

BS ISO 13405-2:2015 pdf free.Prosthetics and orthotics一Classification and description of prosthetic components
The force-transmission properties of a socket relate to the features of the socket which are concerned with the transfer of the forces necessary for axial stabilization, transverse stabilization, and suspension.In some instances the socket is designed to be used with a liner.
Various terms e.g. total contact and total surface bearing) have been proposed to describe the way these forces are transferred between the stump and the socket. The biomechanical principles, upon which these terms are based, are ill-defined. Thus, the use of these terms is discouraged.
Axial stabilization is necessary to minimize axial movement between the stump and the socket during weight bearing (e.g. during stance phase).
State the principal intended method(s) of axial stabilization as one or more of the following:
a) proximal stabilization, in which the principal stabilizing forces are generated by the shaping of the proximal region of the socket;
b) distal stabilization, in which the principal stabilizing forces are generated by the shaping of the end of the socket; or
c) total socket stabilization, in which the stabilizing forces are generated by the shaping of the whole surface of the socket.
State whether the axial stabilization forces of the socket are modified by the use of a liner.
Transverse stabilization is necessary to minimize angular movement between the stump and the socket duringprostheticuse. Three forms of stabilization are required: anteroposterior, mediolateral,and rotational.State when appropriate, any particular features of the socket shape associated with transverse stabilization.
State whether the transverse stabilization forces of the socket are modified by the use of a liner.
Suspension is necessary to minimize axial movement between the stump and the socket when the prosthesis is unloaded (e.g. during swing phase).
The socket can be suspended either by:
a) anatomical suspension, in which the suspensory properties are obtained by shaping the socket to the underlying bony anatomy. This might require the socket to be opened using removable sections,splits, or other means to allow donning and doffing; or
b) pressure-differential (suction) suspension, in which the suspensory properties are obtained using a socket with an air-tight fit which resists removal by virtue of the pressure differential resulting from such action. It might be necessary to use an external sleeve to achieve the air tight fit;BS ISO 13405-2 pdf free.