<qa>  What is the primary TKA procedure performed by?The primary TKA procedure will be performed by one of the three fellowship-trained orthopedic surgeons at Wake Forest Baptist Hospital Dr. Maxwell Langfitt, Dr. Jason Lang, and Dr. John Shields. The orthopedic surgeon and the patient will be blinded to the TCP assignment and will not be told what tourniquet pressure is being applied. The OR nursing team will be told what the patients assigned TCP is in order to perform the actual inflation. 