Adults with isolated low-grade blunt liver injury almost never need surgery, allowing for streamlined management strategies.

• Only 1.33% of 4,498 patients required intervention.
• Key risk factors for intervention included older age, tachycardia, and hypotension.

Young, stable patients may be discharged after brief observation, leading to more efficient use of resources.

• Patients under 51 with stable hemodynamics have less than a 1% chance of needing intervention.