Although subject to considerable research from perspectives including general practitioners, patients, and perspective guidelines, chronic low back pain (CLBP) continues to be a common but contentious condition in primary care. We used medical consultation records, critical incident interviews, and a think-aloud problem-solving task to examine how general practitioners applied professional knowledge of the condition, especially in relation to psychosocial care. Using qualitative content analysis and thematic analysis, we identified a pragmatic, goal-focused approach to patients, a schema based on biomedical knowledge and tacit theories of motivation. The doctors’ expectations for CLBP included uncertainty over symptoms and doubts over patient credibility, which helped to explain an a…