Thanks for the responses.
A character has a broken weapon arm (-50).
The arm has been set, bandaged and put into a sling, and will heal (naturally) completely in 4 days.
That seems a very short time to me - unless there is magical healing or something else is involved. To fully heal a broken arm takes more like 4 weeks or more.
First: how bad is the fracture?
If the arm is broken and useless, then the -50 should be applied imho to all actions (and use of the arm would be impossible) and you should have look the "severe wounds" column of the healing table (so it would take 10 days to heal the arm, not 4).
It is a medium bone wound (-50), with a recovery roll of 66+ on Recovery Table T-5.4 (RMSR p130), though I didn't want to make this question too system specific as I suspect these scenarios will be more a GM call than an application of existing rules.
I would require him/her to not use it in any significant way (holding a mug of ale is not significant in this regard) and if they do, not only do they incur the -50, they have to restart from the beginning for healing purposes. Yes, I would make them take negatives to actions that do not involve the arm to keep from unduly jostling it. The amount of negative depends upon the action involved (anywhere from -10 to -50). And, they could actually worsen the injury and get a worse negative modifier and take even longer to heal if they mess up.
So if the broken arm is used, it will go back to -50 (no matter how far along it has recovered), and there would have to be another check for nerve damage?
Assuming a splint has been applied too, are there any activities (that do not involve the broken arm directly) that may not be performed (eg moving at 5x base rate, leaping, landing, combat)?
If the arm is broken but the penalty of -50 is applied "only" to actions requiring that arm, then I would apply at least half the penalty to actions requiring both arms and no penalty to other actions.
The problem is that the rules state that it is a -50 wound, but don't specify the "only" part. It is clear how this will affect the broken arm itself, but not how other actions might be affected.
Would you consider that OB with the off-hand would be affected by the break to the weapon arm? Would you apply half the penalty?
How about walking/running? My feeling is that there would be some penalty, but not the whole -50, maybe not even -25.
I would just suggest you ask yourself these question and really THINK about it. Then write up a bit of what you are thinking in rules forms and try them out in your next game.
I have been thinking about it, but that doesn't mean I won't also want to find out how other players/GMs would deal with the situation.
If, as I suspected, there aren't any existing rules that address these issues, I will naturally put something together for future reference. But I can see that there will always have to be an element of GM's discretion involved, to deal with unforseen circumstances.
At this point all I really want to do is decide on how the injury would affect use of the off-hand, and if it will affect walking/running (and to what extent).
Thanks again for the responses.