 The transition to an exclusive triangular implant policy by UnitedHealthcare, the nations largest health insurer, is supported by over 100 peer-reviewed publications, and comes as SI-BONE surpasses 60,000 iFuse procedures performed by more than 2,500 surgeons worldwide The transition to an exclusive triangular implant policy by UnitedHealthcare, the nations largest health insurer, is supported by over 100 peer-reviewed publications, and comes as SI-BONE surpasses 60,000 iFuse procedures performed by more than 2,500 surgeons worldwide 