I had a DVT with pulmonary embolism and not on blood thinner at the time of surgery. Before my hip surgery I made sure the team knew that and after surgery, I was up walking and on a blood thinner. The team needs to take this seriously as during my stay in the hospital, they checked clotting time and then sent me home on the blood thinner injection. Granted, I had my clot after bunion surgery in 1999, but when I've had surgery over the years, the doctors treat me to stop a recurrence. Good luck to your husband.