Surgical procedure
bleeding, postoperative pain
BLEEDING, CAVITY
All of the operations were performed by the same team of senior surgeons, all under general anaesthesia. We performed all operations through a midline skin incision and medial parapatellar approach. Intramedullary guides were used for all femoral preparations, and extramedullary guides were used for the tibial preparation. A tourniquet was used throughout the operation to stop bleeding, with a tourniquet pressure of (systolic + 100) mmHg (1 mmHg = 0.133 kPa). A surgeon-selected cemented posterior-stabilised prosthesis (The Legion system (Smith & Nephew, London, UK) was used. The tourniquet was loosened, the bleeding had completely stopped, the wound was flushed with saline and TXA 3 g (30 ml) was injected into the joint cavity, followed by a 60 ml cocktail of 200 mg Ropivacaine (10 ml, 100 mg, Naropin; AstraZeneca AB, Sodertalje, Sweden) and 0.1 ml Betamethasone (1 ml, Diprospan; Merck Sharp & Dohme, Luzern, Switzerland) to reduce postoperative pain prior to capsule closing [