How dangerous is a hip replacement surgery?

Depends on patient: Hip replacement is a very frequently performed surgery and in good hands, it is quite safe. There are risks with any surgery and hip replacement patients can have blood clots and bleeding in the post-operative period. The overall safety really depends on the overall medical/health condition of the patient undergoing the surgery.

Generally safe: Hip replacement surgery is a common and safe operation but does have risks. Risks include medical complications (blood clots, stroke, etc), anesthetic complications, and surgical complications (infection, dislocation, nerve or blood vessel injury, fracture, leg length discrepancy). A careful pre operative assessment should be made for each invididual patient to understand and manage the risks.