Answer to the letter to the editor of E. Gurun concerning "Quadratus lumborum muscle stiffness in chronic non-specific low back pain: a diagnostic accuracy study" by M. López-Redondo, et al. (Eur spine J [2025]; doi: 10.1007/s00586-025-09114-2)
1Department of Physiotherapy, Faculty of Nursery, Physiotherapy and Podiatry, Complutense University of Madrid, Pl. de Ramón y Cajal, Madrid, 28040, Spain. juavaler@ucm.es.
0Department of Physiotherapy, Faculty of Nursery, Physiotherapy and Podiatry, Complutense University of Madrid, Pl. de Ramón y Cajal, Madrid, 28040, Spain. juavaler@ucm.es.
