Ultrasound monitoring of healing tendons provides objective data to guide rehabilitation timelines, preventing premature return to work that causes reinjury and prolongs suffering.
Serial ultrasound monitoring is a welfare tool that prevents a specific, common welfare harm: premature return to athletic work causing tendon reinjury. The reinjury cycle - injury, rest, apparently sound, return to work, reinjury - is a significant source of preventable welfare harm in performance horses. Horses that reinjure tendons multiple times face diminishing treatment prospects and increasingly difficult welfare decisions about continued athletic participation or retirement. Ultrasound monitoring provides the objective evidence to make return-to-work decisions based on structural healing rather than clinical soundness alone, breaking this cycle. The welfare investment in serial ultrasound monitoring - a modest cost compared to the consequences of reinjury - is justified by its capacity to protect horses from preventable reinjury and the suffering of repeated rehabilitation.