Does Time Truly Heal All? A Prospective Cohort Study of 6- To 12-Month Recovery Transitions After Traumatic Injury

Background: Recovery after traumatic injury may extend beyond conventional follow-up, but longer-term changes in function, quality of life (QoL), and return to work (RTW) remain incompletely characterized. Study Design: English- or Spanish-speaking patients with Injury Severity Score ≥9 from three US Level I trauma centers completed telephone surveys 6 and 12 months after injury. Recovery was characterized as improved, stable, or declined between timepoints. Function was assessed across six Trauma Quality of Life domains; QoL and RTW by self-report; and mental health using GAD-7, PHQ-8, and Breslau PTSD scales. Multivariable logistic regression evaluated predictors of QoL decline. Sensitivity analyses examined traumatic brain injury (TBI), isolated long bone fracture, and general trauma. Results: Among 1,894 patients, 49% of those impaired at 6 months improved, 41% were unchanged, and 11% worsened by 12 months. Patients ≥65 more often improved (20% vs. 16%) and declined (16% vs. 9%) than those <65; surgical patients more often improved (20% vs. 16%). QoL improved in 22%, remained stable in 56%, and declined in 22%. TBI patients had the greatest functional improvement (55%), whereas long bone fracture patients had the greatest QoL improvement (26%). Weak social support (aOR 3.68) and mental health symptoms were associated with QoL decline. RTW reached 61% by 6 months; 74% of non-returners remained so at 12 months. Conclusions: Recovery remains dynamic beyond 6 months after trauma, supporting extended follow-up and individualized rehabilitation. Associations of mental health symptoms and weak social support with QoL decline support incorporating their assessment into post-injury care.