The physiotherapy profession has increasingly sought to demonstrate that its practice is based on sound scientific principles validated by rigorous research, in other words that its practice is evidence-based. This paper will assert that evidence-based practice requires not only carefully evaluated interventions judged through objective criteria but also input from patients in a systematic way that provides a foundation for patient-centred care. Consideration of both is essential if the best outcomes of physiotherapy intervention are to ensue. The merits of qualitative research are appraised as a means of adding the humanistic mission to result in best practice in physiotherapy.