One is the loneliest number.

Despite 8 Gy x 1 being the world heavyweight champion of palliation for bone metastases, this NCDB analysis shows that fewer than 10% of patients with bone mets get single fraction treatment. The majority of people (50-60%) typically still use 30 Gy in 10 fractions, which is reasonable, but there has been a >50% drop in the use of protracted (>10 fraction) regimens from 34% in 2010 to 15% in 2015. | Wegner, Pract Radiat Oncol 2020