Surgery is recommended for the suffering of the patient. She is only 51 but if she is in severe pain, disability with compromised functions then knee replacement is the last option with the conventional approach. my approach to knee is focussed more on the patellofemoral joint and the muscle health and address the same by using principles of ergonomics, load management, lifestyle modifications and pain receiving measures (patella taping, orthotics, analgesics).

Blood is a important parameter , decide not only by the surgeon but also the anaesthetist. Better not to cut down or try to avoid blood related events as this could endanger patient and procedure safety.