The story
From roller + sledge hockey.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: A parasport, an adapted form of roller hockey, and a floor version of (ice) sledge hockey, where disabled athletes rid atop roller sledges (roller sleds), and propel themselves with a pair of roller sledge hockey sticks, that function as canes/"walking sticks" and hockey sticks. Various variants of roller sledge hockey use different configurations of wheels. Full definition →
From roller + sledge hockey.
Etymology from Wiktionary, CC BY-SA 4.0.