Psoas weakness following oblique lateral interbody fusion surgery: a prospective observational study with an isokinetic dynamometer. - Lee, Subum; Kim, Ae-Ryoung; Bang, Woo-Seok; Park, Jin Hoon; Lee, Sang-Woo; Kim, Kyoung-Tae; Cho, Dae-Chul (Spine Journal, 2022)