A representative creep curve (74 year old male). Displacement parameters that define the creep behavior were calculated as: (A) elastic displacement before creep (De), (B) creep displacement (Dcr), (C) total displacement (Dtot), (D) elastic recovery (Rel), (E) creep recovery (Rcr), and (F) residual displacement (Dres). Residual from creep alone (Dres-cr) was calculated as Dcr-Rcr. Quasistatic loading and unloading occurred over 100 seconds. Curve fitting was performed on the region between A–C.