Book excerpt: - NEW! Updated content throughout the text reflects the current state of primary care and physical therapy practice. - NEW! New chapter on electrodiagnostic testing helps familiarize physical therapists with indications for electrodiagnostic testing and implications of test results to their clinical decision-making. - NEW! New chapter on patients with a history of trauma emphasizes the red flags that physical therapists need to recognize for timely patient referral for appropriate tests. - NEW! Updated information on how to screen and examine the healthy population enhances understanding of the foundations of practice and the role that physical therapists can fill in primary care models.