Intraosseous pO2 in femoral neck fracture. Restoration of blood flow after

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aspiration of hemarthrosis in undisplaced fractures. Kristensen KD. Kiaer T. Pedersen NW. Department of Orthopedics, Odense University Hospital, Denmark. Acta Orthop Scand. 60(3):303-4, 1989 Jun. We recorded intraosseous pO2 in 9 patients with Garden Stage I fractures of the femoral neck during aspiration of the hemarthrosis. An increase in pO2 indicating restoration of the blood flow was seen in 2 of the patients.