I always thought the term "Vitality" was a good one even though I didn't like the actual mechanics of the Wound/Vitality system.
So change Hitpoints to Vitality. Change Healing Surge to Recovery. And now the terminology matches the mechanics.
For people who want to add a touch of simulation and allow for long term injury, I say steal the SW Saga condition track with some slight modification.
Any time a character goes negative HP in 4e, that signifies serious injury beyond simple fatigue and scratches (since you literally go unconscious this makes sense).
You move one step down the condition track. This condition remains even though your Hitpoints (aka Vitality), and your Healing Surges (aka Recoveries) reset after an Extended Rest per the standard rules.
For every day of complete bed rest you have, you make a 4e style save. No change on a 1-9, on a 10 or better you move 1 step back up the condition track. DMs can decide how they want magic to affect this, and you could add variants, like a roll of natural 20 shifts you all the way up, or perhaps just up two steps, and a roll of 1 actually drops you a step.