Collocations for brace - noun

1. for supporting a part of the body

knee, leg, neck, shoulder

have, wear
I used to wear a brace.

brace on
He had a brace on his teeth. (BrE)
He had braces on his teeth. (AmE)

→ See also suspenders

hold sth up, support sth
The braces held up his trousers.

Brace is used with these nouns as the object:
leg