True or False: Clinical studies show that the use of autogenous iliac bone graft is more effective in younger patients compared to elderly patients for nonunion.

The statement is false because clinical studies indicate that the effectiveness of autogenous iliac bone grafts for treating nonunions may not be significantly diminished in elderly patients compared to younger patients. While age can influence healing and recovery, the regenerative potential of autogenous grafts often provides beneficial outcomes across different age groups. Factors such as overall health, nutritional status, and the specific nature of the nonunion are also impactful, rather than solely age. Therefore, the evidence does not support the claim that younger patients have better outcomes with autogenous grafts than elderly patients; instead, it suggests that both demographics can experience successful results from this treatment.