"visit to minor injury unit"

I visited the Minor Injury Unit on Saturday 20th June due to a knee injury, I cannot fault the staff from the Receptionist to the Doctors/Radiologist, they showed kindness and care and explained everything to me, they even showed me the xray and suggested I visit my doctors to be referred for a knee replacement (separate issue to the injury) they decided I needed a knee support only problem was they didn't have one, how can an A&E unit not have the dressings they need, it must be very demoralising for the staff who do their upmost to treat patients to the best of their ability but the system lets them down, I would like to know who is responsible for ordering dressings etc, if and when I do get referred for knee replacement I would chose not to have it done at Solihull Hospital.