An apparatus includes a strand of compliant material with a center axis. The apparatus further includes a multi-region angular displacement sensor connected to the strand. The multi-region angular displacement sensor includes a first angular displacement unit in a first sense region of the stand. The first angular displacement unit is used to determine a first angular displacement in response to deformation of the first angular displacement unit. The multi-region angular displacement sensor also includes a second angular displacement unit disposed in a second sense region of the strand. The second angular displacement unit is used to determine a second angular displacement in response to deformation of the second angular displacement unit.