Surgery
thrombosis, femoral head position
THROMBOSIS, BLOOD, AIDS
All surgeries were performed by or under direct supervision of an orthopedic surgeon. The procedure was performed under general anesthesia with the leg under traction using an approximately 10 cm lateral thigh incision and with the vastus lateralis muscle held anteriorly. A k-wire was placed using a 135° guide and fluoroscopy to aim for a central femoral head position in both the anterior–posterior (AP) and lateral (LAT) plane. After reaming the implant canal, 6 1-mm tantalum beads were inserted in the femoral head/neck fragment, and 7 tantalum beads were inserted into the greater and lesser trochanter with an 18 cm long bead gun (Wennbergs Finmek, Gunilse, Sweden). Randomization was done after tantalum bead placement. Subsequently, the screw length was measured and the screw and a 4-hole plate was inserted. The wound was closed using resorbable 2–0 suture in the fascia and subcutaneous tissue and nylon 4–0 skin suture. Post-surgery, patients were mobilized with full weight bearing and walking aids as needed. Cefuroxime (Braun, Frederiksberg, Denmark) 1500 mg intra-venous (IV) administration was used as preoperative antimicrobial prophylaxis. Low molecular weight heparin (Dalteparin, Pfizer, Ballerup, Denmark) 5000 international units (IU) was used for thrombosis prophylaxis preoperative as needed and 12 h post-operative for 7 days. Blood transfusion was given postoperative upon anemic symptoms and low hemoglobin level (< 6.0 mmol/L).