In vivo rate-controlled indentation tests, force relaxation trials, and creep studies were conducted on the soft tissues of the residual limbs of individuals with trans-tibial amputation. The cyclic indentation tests indicated that the bulk soft tissue response to compressive load is nonlinear and rate-dependent. The force relaxation studies indicated that substantial relaxation (35-80%) may occur, with equilibration typically occurring in less than 60 seconds. Most of this relaxation (20-70%) occurred within 5 seconds after loading. Tissue creep was also marked, ranging from 20 to 110% over two minute
