Spiritually trained doctor here- you are absolutely right to worry. Basically every doctor will do this at the first opportunity. You will probably be injected with AIDS causing chemicals while you are under: https://www.infectedbloodinquiry.org.uk/.

Your organs may well be stolen and trafficked- a practice that the UN has a key role in https://www.unodc.org/documents/human-trafficking/2008/BP011HumanTraffickingfortheRemovalofOrgans.pdf

Consider carefully if the surgery can be avoided entirely. First, most surgery is not a method of treatment at all, but a deliberate form of mutilation as a sacrifice to the pagan demon Asclepius (you will see his snake idol- the rod of Asclepius- in most doctors offices). Second, who told you that you needed surgery? Was it, well, a doctor...?

There are a number of alternatives if you're suffering from simple joint pain. You've heard of ivermectin and hydroxycholoroquine, but a common recommendation is Miracle Mineral Supplement (MMS)- an aqueous solution of chlorine dioxide, see https://gsconlinepress.com/journals/gscbps/content/atc-malachlorite%C2%AE-treatment-patients-acute-plasmodium-falciparum-infection-pilot-study.

Laetrile (apricot pits), or sungazing may also help