Research on physiotherapy treatment interventions has increased dramatically in the past 25 years and it is a challenge to transfer research findings into clinical practice, so that patients benefit from effective treatment. Development of clinical practice guidelines is a potentially useful strategy to implement research evidence into practice. However, the impact of guideline implementation in Swedish primary care physiotherapy is unknown. To achieve evidence-based practice (EBP), research evidence should be integrated with clinical expertise and patient preferences, but knowledge is limited about these factors in Swedish primary care physiotherapy.

The overall aim of this thesis was to increase understanding of factors of importance for the implementation of EBP in Swedish primary care physiotherapy. Specific aims were: to translate and adapt a questionnaire for the measurement of EBP and guidelines; to investigate physiotherapists’ attitudes, knowledge and behaviour related to EBP and guidelines; to examine clinical practice patterns; to evaluate the effects of a tailored guideline implementation strategy; and to explore patients’ preferences for physiotherapy.

The thesis comprises four studies (A-D), reported in five papers. In Study A, a questionnaire for the measurement of EBP and guidelines was translated, cross-culturally adapted, and tested for validity (n=10) and reliability (n=42). Study B was a cross-sectional study in which this questionnaire was used to survey primary care physiotherapists in the county council Region Västra Götaland (n=271). In Study C, a strategy for the implementation of guidelines was developed and evaluated, using the same questionnaire (n=271 at baseline, n=256 at follow-up), in a prospective controlled trial. The strategy was based on an implementation model, was tailored to address the determinants of guideline use identified in Study B, and comprised several components including an educational seminar. Study D was an exploratory qualitative study of patients with musculoskeletal disorders (n=20), using qualitative content analysis.

The validity and reliability of the questionnaire was found to be satisfactory. Most physiotherapists have a positive regard for EBP and guidelines, although these attitudes are not fully reflected in the reported use of guidelines. The most important determinants of  guideline use were considering guidelines important to facilitate practice and knowing how to integrate patient preferences with guidelines. The tailored, multi-component guideline implementation significantly affected awareness of, knowledge of, and access to guidelines. Use of guidelines was significantly affected among those who attended an implementation seminar. Clinical practice for common musculoskeletal conditions included interventions supported by evidence of various strengths as well as interventions with insufficient research evidence. The most frequently reported interventions were advice and exercise therapy. The interviewed patients expressed trust and confidence in the professionalism of physiotherapists and in the therapists’ ability to choose appropriate treatment, rendering treatment preferences subordinate. This trust seemed to foster active engagement in their physiotherapy.

In conclusion: The adapted questionnaire can be used to reliably measure EBP in physiotherapy. The positive attitudes found do not necessarily translate to guideline use, due to several perceived barriers. The tailored guideline implementation strategy used can be effective to reduce barriers and contribute to increased use of guidelines. The clinical practice patterns identified suggest that physiotherapists rely both on research evidence and their clinical expertise when choosing treatment methods. Patients’ trust in their physiotherapist’s competence and preference for active engagement in their therapy need to be embraced by the clinician and, together with the therapist’s clinical expertise, integrated with guideline use in the clinical decision making. Further research is needed on how the EBP components and different knowledge sources can be integrated in physiotherapy practice, as well as on implementation effects on patient outcomes.