Hi condition is not very clear in the quarry, but it can be due to back problems like disc buldge, spondelits which is causing nerve compression(Sciatica pain),which will get clear after x-rays/MRI. treatment varies according to symptoms & clinical condition of the patient. physiotherapy has excellent results in such conditions, for more info. log in to www.proactivephysio.in

As per my advise Consult a orthopaedic as soon because sometimes compression of nerve root from back bone i could be a reason for his pain and weakness of leg . But this nerve compression will clear after M.R.I test ok after that physiotherapy is the only and safe solution for his problem .