Acceptance and commitment therapy (ACT) for patients with degenerative spinal disorders and maladaptive psychological processes: an observational study. - Evaniew N; Alduwaisan A; Smith V; Whittaker T; Eckenswiller D; Soumbasis E; Tanguay R; Jacobs WB; Thomas KC; Nicholls F; Soroceanu A; Swamy G (Journal of spine surgery (Hong Kong), 2025)