Might be it was the case of heel spur bt as wound shown in pic it is not due to heel spur. This condition is know as corn. Both the condition are treatable with Homoeopathic Medicine. Wonderful result in both cases. Even his
diabetes and high bp also controlled by Homoeopathic Medicine.
If you have doubt go for second consultation with any doctor he will tell the diagnosis.
Next Steps
Ur father main issue is corn not a heel spur.
Health Tips
if you want further any detail regarding ur father condition then you are free to consult with me here online . medicine courier facility is also available.
i will pray for ur father condition that he will become normal very soon.