Dear Anrina

Gcoe has given you the best advice you could get from anyone in all honesty.

I totally agree that nerve conduction studies are very important in this case. I agree that an urgent review by a neurosurgical team is needed in this case. I also feel that ongoing physiotherapy is relevant. In my home country, we used to see a lot of gunshot victims and all these steps are usually done...

There is loss of sensation and active movement...like Gcoe said is this due to compression by swelling/bone fragments on the nerve or breakdown of the nerve either by a resection by bullets piercing or degeneration from previous compression...
Only nerve conduction studies will give you that information...when this is done, the neurosurgical team can then decide whether a nerve graft is needed or not...

the problem with peripheral nerve injuries that involve nerve resection or degeneration is that even though the nerves will eventually grow back after some years, they often grow hapharzardly causing abnormal movements in the part they supply. this may not be functionally beneficial for the sufferer, also by this time several orthopeadic/musculoskeletal problems will have set in....i.e stiffness, clawing, muscle wastage...etc

So if anything at all, demand that this person is reviewed by the neurosurgical team like Gcoe has said...

with regards physiotherapy, i think this is important at this stage...to maintain/improve at least passive range of motion as well as maintain muscle bulk...

You have mentioned that he is able to move his right hand slightly, this may suggest that the nerves are compressed and not actually resected...also the report of painful electrical type currents indicates that probably the nerves are still intact and are just suffering from compression, a total resection may be painless...or could be painful when irritants in the vascular system agitate the endings...my guess is that the nerves are probably still intact...but this is just a guess from your report

My take on physiotherapy would be to consider the use of electrical stimulation, passive movements and a concise regime of elevation...functional splints may be required...
electrical stimulation when used wisely with compression techniques/ the use of a flowtron machine may help reduce swelling/combined with an elevation regime...this may be painful, painkliiers may be needed and an evaluation of radiological investigations may be needed prior to avoid causing excessive movements in unstable bones (if any), or aggravate preexisting compression

you cannot do any strengthening exercises anyway because there are very little active movements, this is a strong indication for FES (functional electrical stimulation)...

Maintaining range within other unaffected areas is an important consideration for physiotherapy

like Gcoe said if there are fragments within a joint, this might add to stiffness...if the orthopedic team have evaluated and feel there is no real danger from passive exercises, this can be done....

Im with Gcoe on this that the specialists need to give guidance with most if not any physiotherapists decision