"group A: no involvement of the lateral pillar, with no density changes and no loss of height"
"group B: lucency in the lateral pillar with some loss of height, but >50% of the original height"
"group B/C: thin or poorly ossified lateral pillar or a loss of ~50% of the original height"
"group C: "
"The Herring classification is currently the most recommended system given its higher inter- and intraobserver reliability (c. 2025) 2."