Watch: Le'Veon Bell throws down dunk following MCL injury

Le'Veon Bell's knee appears to be holding up just fine.

The Pittsburgh Steelers running back, who injured his MCL in November, showed off his dunking ability Monday on Twitter.

Bell has been using a treatment called blood flow restriction, which is aimed at strengthening the core leg muscles. The Steelers haven't put a timetable on Bell's return, but hope to have him back for Week 1.