Hi, Sorry to hear about your dad's neuropathy.
Two things I did not get from your mail are, has any quantitative neuropathic testing been done on his legs and feet in particular? And how is his vision and general balance?
Both these are relevant as severe neuropathy to the point of Charcot's arthropathy can cause the knee replacement
to fail prematurely, if joint perception if lost significantly. Second factor determining the longevity of the prosthesis
is the bone quality. It again takes a big hit if your dad had been on alcohol for long. In addition vision and gait co-ordination is important for longevity of the replacement. Infection is generally not an issue with ex-alcoholism
but neuropathy especially in the feet needs careful patient counselling
with respect to possible foot ulceration and subsequent implications on an existing prosthesis.
I hope this helps,
Please let me know if you have any other queries
Dr Purushottam Reddy Padala MS(Ortho) FRCS
Consultant orthopaedic and joint replacement
Happy joints orthopaedics