How to treat a swollen finger, jammed from playing basketball?

See a doctor. Basketball injuries to the middle knuckle include simple ligament sprains, central slip (tendon-boutonneire) rupture and fracture dislocation. Unfortunately, even severe injuries could look innocuous. I personally feel it is important to have these injuries evaluated in order to rule out a more sinister injury. It could mean the difference between 3 weeks of buddy taping and surgery...
Jammed. Make sure it's not cracked first, if not, motion by flexing-extending the finger as tolerated to minimize more swelling.

Related Questions

Up and I find it hard to play with this swollen finger, that was sprained last week. What do I do, continue buddy tape?

Yes+get xray/see doc. If you have not been evaluated yet, you should see a hand specialist/hand surgeon for exam and xray to rule out a fracture (broken bone) or a more significant soft-tissue injury; some finger injuries thought to be sprains can be more serious injuries that need splinting or surgery to prevent development of deformity or permanent loss of motion. Good luck! Read more...
See a doctor. Could be serious. Maybe not. Unfortunately, even severe injuries could look innocuous. I personally feel it is important to have these injuries evaluated in order to rule out a more sinister injury. It could mean the difference between 3 weeks of buddy taping and surgery... Read more...