Since the introduction of PediatrOS™ FlexTack™ Hemi-Epiphysiodesis implants in 2013 and PediatrOS™ RigidTack™ Epiphysiodesis implants in 2015, they have enjoyed an unbroken track record of success in correcting varus/valgus misalignments and compensating for leg length differences. It has become an alternative to implants approved for conventional applications.