Study protocol ‐ original German.

<div><p>With increasing survival rates, the functional outcome and quality of life of trauma patients are gaining more importance. Survivors suffer from chronic pain, psychosomatic disorders, and unemployment as well as increased post-traumatic morbidity, which can lead to an impaired quality of life. So far, the TraumaRegister DGU<sup>®</sup> records patient data during in-hospital treatment. In this study severely injured patients after major trauma are assessed when discharged from hospital, as well as 6, 12 and 18 months after trauma. The aim is to document cross-sector patient pathways and to identify and quantify the factors influencing the health-related quality of life (hrQoL) and the return to work (RTW), using patient-reported experience measures (PREM) and patient reported outcome measures (PROM). Patients are recruited in certified trauma centers of the German Society for Trauma Surgery (DGU). This study protocol describes the methodology of the prospective multicentre study of LeAf Trauma. Translation of the results will be implemented by using the network structures of the German Society for Trauma Surgery (DGU) for the treatment of patients with major trauma.</p></div>