A finite element model to assess transtibial prosthetic sockets with elastomeric liners.

ABSTRACT: People with transtibial amputation often experience skin breakdown due to the pressures and shear stresses that occur at the limb-socket interface. The purpose of this research was to create a transtibial finite element model (FEM) of a contemporary prosthesis that included complete socket geometry, two frictional interactions (limb-liner and liner-socket), and an elastomeric liner. Magnetic resonance imaging scans from three people with characteristic transtibial limb shapes (i.e., short-conical, long-conical, and cylindrical) were acquired and used to develop the models. Each model was evaluated with two loading profiles to identify locations of focused stresses during stance phase. The models identified five locations on the participants' residual limbs where peak stresses matched locat

SUBMITTER: Cagle JC 

PROVIDER: S-EPMC5999538 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature