I remember you folks have had at least one knee replaced. Were any of you prescribed a CPM (Continuous Passive Motion) machine to use on your bed at home during the first few weeks? If so please let me know what you think. D-day is Wednesday for me and I just received approved paperwork for the machine (the staff forgot to tell me about it apparently). The only downside I've read on the net is that for non-motivated patients (not me) they may just rely on the machine and not do their resistance movements.