Clinical pathways have been implemented in many healthcare settings as a link between evidence and practice. Most published research concludes that when clinical pathways are implemented and used by health professionals, there is a positive impact on health outcomes. However, some research also suggests that utilization of clinical pathways by health professionals is low and that implementation strategies for linking evidence with clinical practice often prove to be weak or ineffective. This paper describes a before and after study to determine whether an interdisciplinary, genuinely collaborative, and evidence-based process of clinical pathway implementation resulted in increased documented use of an acute myocardial infarction (AMI) clinical pathway by health professionals in a regional Australian hospital. Underpinning the design and implementation process was the belief that true team involvement would lead to ownership, acceptance, and, ultimately, to increased usage of the pathway. Documented clinical pathway usage was measured in two ways: (1) the presence of the AMI clinical pathway in the medical records of patients diagnosed with an AMI and (2) the proportion of the AMI clinical pathway completed when it was present in the medical record. A total of 195 medical records of those diagnosed with an AMI were audited before (n = 124) and after (n = 71) the implementation process. The interdisciplinary, truly collaborative, and evidence-based implementation process resulted in a statistically significant increase in documented usage of the AMI pathway (22.6% vs. 57.7%; p <.000). Results indicate that involvement of key users in the design and implementation of a clinical pathway significantly increases staff utilization of the document.