221 patients admitted to the emergency department for traumatic injuries resulting in moderate to severe pain were randomized to received either patient controlled analgesia (PCA) or standard treatment of nurse-titrated analgesia. The purpose of this study was to determine whether PCA is more effective in mitigating pain in patients with traumatic injuries compared to standard treatment. Pain scores were assessed every hour for a total of 12 hours after first analgesia administration, including that in the emergency department and after admission to a hospital ward. Findings demonstrated no statistically significant differences in total pain over the 12 hour study period between patients who were treated with PCA compared to those who were treated via routine care practices.