### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
I broke my right humerus 2 years ago (long story) 15 months later it was found that the rod was to far up in my shoulder and causing pain second opp replaced rod into correct position but the screws came out 3rd opp to correct that,they are still out slightly which brings me to my question ,can it still be stable when screws are out a little bit ? I have a pulse machine that I was advise to use to heal the bone that I use once a day? why only once a day ? after the 3rd opp I have a nerve problem in my thumb and four finger, both numbness and stinging, hot water feeling,How long would you estimate the recovery time will be now ?

### output:

Helloit depends on what your orthopedic surgeon diagnosis-whetherrr non-union is there ....the details you provide indicate still union is incomplete that repositioning of nail done again with screws fixation. If I were to treat, I would prefer to put bone graft also and, if your bone not weak due to osteoporosis, like to do a bridge plating instead of nailing. However, under the circumstances, your surgeon is the best judge as he has seen the inside, and x-rays etc. and if, screws are now fixed in place, trust his judgement for now, slight bit of protrusion of screws may not matter. Regarding nerve symptoms, of thumb and index finger, means, radial nerve slightly implicated at the humerus level in mid-arm.90% recovery of nerve is spontaneous, just keep up with exercises of thumb and fingers and wrist. Pulsing once a day to promote healing may be sufficient clinically if your doctor thinks so. Musce-nerve stimulation helps in rebuilding nerve and muscle tissues best wishes