A measurement system for capturing a transit time, phase, or frequency of energy waves propagating through a propagation medium is disclosed. The measurement system comprises a sensing module (200) and an insert dock (202). The sensing module (200) includes a load sensing platform (121), an accelerometer (122), and sensing assemblies (123). In one embodiment, a force or load applied by the muscular-skeletal system is measured. The force or load is applied to the sensing assembly (123). The accelerometer (122) generates motion data. The motion data includes acceleration data. The force or load measured by sensing assembly (123) in combination with the motion data captured by the accelerometer (122) is used to calculate a total force or load. A second accelerometer can be used to provide reference position information. The sensing assemblies (123) comprise a transducer (304), an elastic or compressible propagation structure (305), and a second transducer (314).
