Mark J. Spangehl, M.D.

PEPPER is a randomized study comparing the three most commonly used anticoagulants in North America in patients who have elected to undergo primary or revision hip or knee joint replacement surgery. The anticoagulants being compared are enteric coated aspirin, low intensity warfarin, and rivaroxaban.

The purpose of this study is to compare two methods of postoperative pain management for patients who have undergone total knee replacement surgery.

The purpose of this study is to determine whether or not giving a lower dose of antibiotics (Vancomycin) in the area where it is needed (the knee joint) is more effective at preventing infection than the current standard dose which is given intravenously (IV) through a wrist vein.

The purpose of this study is to determine whether or not giving a lower dose of antibiotics (Vancomycin) in the area where it is needed (the knee joint) is more effective at obtaining adequate tissue levels of the antibiotic than the current standard dose which is given intravenously (IV) through a wrist vein. The use of IORA vancomycin requires the use of a tourniquet for the duration of the procedure. Many surgeons prefer to perform the surgery with tourniquet use minimised or without a tourniquet at all. The aim of this study is to evaluate whether IORA vancomycin can achieve effective tissue concentrations with tourniquet use minimised.

This post-marketing investigation will evaluate the long term (up to 15 years) survivorship of the Attune Primary Knee Prosthesis in patients with non-inflammatory degenerative joint disease. Data from Subjects who receive one of four knee configurations will be pooled to establish a contemporary dataset.