No matter if you are new to snow boarding or an old pro at skiing, injuries happen. Here's a few guidelines for dealing with your twisted knee or a muscle strain from accidents on the mountain.
The best thing for an immediate injury is RICE (rest, ice, compression and elevation). So don't go into the hot tub, apres ski, or if you do keep your injured limb out of the hot water. Using heat instead of ice can delay your recovery turning a seven - to ten - day recovery into a four-week one. Taking your anti-inflammatory of choice immediately post injury can significantly aid your recovery.
About seeing a doctor? If you are improving after 3 days, chances are you will do just fine on your own. However, if your tweaked knee is still severely swollen and you don't have full range of motion of the joint, you should have it checked out by a physician.
Going to 6 to 8 sessions of physical therapy can definitely help you work through your injury and help you regain strength and mobility.
Have fun on the mountain, but play it safe too and take care of yourself if you happen to get hurt. That way you hopefully won't miss the rest of the season.