Our findings show that physiotherapists working in primary health care use clinical testing in LBP to a great extent, while various patient-reported outcome measures are used to a low-to-very-low extent. Several barriers to the use of patient-reported outcome measures were reported such as time, knowledge, and administrative issues, while important findings on advantages were to enhance the clinical reasoning process and to educate and motivate the patient. Barriers might be changed through education or organizational change-work. To enhance the use of patient-reported outcome measures and thus person-centered care in low-back pain, recommendation, and education on various patient-reported outcome measures need to be advocated. Implications for rehabilitation To increase the effects of rehabilitation in low-back pain, yellow flags, and other factors need to be taken into the consideration in the assessment which means the use of patient-reported outcome measures in addition to clinical testing. The use of patient-reported outcome measures is an advantage in the clinical reasoning process to enhance the quality of assessment and to educate and motivate the patient. Barriers to use patient-reported outcome measures are mainly lack of time and knowledge, and administrative aspects. Through education or organizational change-work, barriers to the use of patient-reported outcome measures might be changed.