Knee replacement surgery pays for itself nearly twice over as patients regain mobility and return to work, researchers say.

The societal and economic savings of knee replacement surgery outweigh its costs nearly 2-fold, according to an American Academy of Orthopaedic Surgeons study.

The, study published this week in the peer-reviewed Journal of Bone & Joint Surgery, addresses recent scrutiny of the cost and durability of knee replacement surgery, praising the procedure as a money-saver for patients and for healthcare systems.