Fig. 4

Intraoperative bleeding from the distal femoral osteotomy surface and real-time blood pressure in two typical cases. a, b A 64-year-old female patient with osteoarthritis of the left knee in group NE had an intraoperative osteotomy surface bleeding score of 2 and a real-time mean arterial pressure of 83 mmHg. c, d A 62-year-old female patient with osteoarthritis of the right knee in group C had an intraoperative osteotomy surface bleeding score of 4 and a concurrent mean arterial pressure of 68 mmHg