RecruitingPhase 3Radiation therapyComparing SingLe- Vs Multi-Fraction Spine STereotActic Radiosurgery in Spinal MetastasesThe goal of this study is to determine whether fractionated Stereotactic radiosurgery (SRS) for spine metastases is associated with improved local tumor control compared to single-fraction SRS. Patients will be randomized to treatment with spine SRS using either 22 Gy in 1 fraction or 28 Gy in 2 fractions.