The purpose of the present study was to determine if a relationship exists between adaptive patterns of causal attributions, adherence, and outcome success in physical therapy behavior. Adaptive casual attributions were defined as internal, controllable, and stable attributions as per Weiner's Attribution Theory of Motivation. Participants were seeking physical therapy for a post-surgical knee injury, with (n=3). Attributions were measured using the CDSII questionnaire, and outcome success was measured by the KOOS questionnaire to assess various dimensions of knee functionality. The respective physical therapist for the patient also completed the RAdMAT questionnaire to measure adherence. The data collected for all participants was analyzed qualitatively, with some emphasis on quantitative findings. Results showed mixed evidence for a relationship between adaptive attributions and adherence across the three participants. A trend toward a relationship between adaptive attributions and outcome success was observed in one participant. In addition, it was observed that adherence does play an indirect role in relating adaptive attributions and outcome success for physical therapy. Conclusions drawn from this pilot study should be used to further educate physical therapists and respective patients in how to improve adherence and experience positive outcomes for rehabilitation.