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Subgroup analyses. (A) Nonunion rates for fractures stratified by the Garden classification. (B) Avascular necrosis (AVN) rates for fractures stratified by the Garden classification. (C) Nonunion rates for fractures stratified by the Pauwels classification. (D) AVN rates for fractures stratified by the Pauwels classification. (E) Nonunion rates for different age groups. (D) AVN rates for different age groups.
