Older pseudobulbs (canes) will never have leaves or flowers again and will eventually die back naturally. There doesn't appear to be anything wrong with yours. While they are still there they give the plant some additional ability to store water and nutrients, so don't remove them until they are noticably yellow and shrivelling up. New growth will come from the base of the plant to form new pseudobulbs.
This is definitely a hybrid, and you will never be able to make a precise identification because there are dozens or hundreds of hybrids of similar appearance. You should be able to find cultural instructions for Dendrobiums of section Spatulata (antelope type) and section Phalaenanthe (phalaenopsis type). This type of hybrid comes primarily from those sections, and should be pretty easy to care for.