knee brace

noun

, Building Trades.

1. a diagonal member for bracing the angle between two joined members, as a stud or column and a joist or rafter, being joined to each partway along its length.

Word History and Origins

Origin of knee brace¹

First recorded in 1910–15

Example Sentences

Nagging knee pain is no match to this knee brace support that’s created to take joint stiffness, pain, and discomfort out of the equation.

From Popular-Science