Abstract: Embodiments of the present invention may provide a limb motion sensor system (100) used to objectively assist detection of equine lameness and even monitor change in gait quality over time. Biosensors (102) may be attached to the pair of front and/or hind limbs. Each conformally shaped biosensor device may be placed lateral to the metacarpal/metatarsal bone (e.g., attached to the lower limb). Inertial data may be collected by the set of sensor devices and may be wirelessly transferred to a portable, perhaps wearable, mobile controller and analytics unit (104) (e.g., smart phone, tablet, or the like). A signal processor application (108) may automatically segment each stride into phases and perform analyses to quantify limb motion metrics and uniformity over time for a single limb (unilateral consistency) or between the contralateral limbs (bilateral symmetry). Three-dimensional motion metrics may be processed, displayed, stored on, and even transmitted from the mobile information system.