A method and device for measuring blood flow in the bone after a fracture, wherein a hole is drilled into the bone. The method includes the steps of inserting the metal sleeve of an osteoscope into the hole inserting the optics of an osteoscope into the metal sleeve and focused on the cavity created by the drill filling the device and the cavity with a physiological solution such that the pressure of the solution is above the systolic blood pressure decreasing the pressure of the solution while observing the cavity through the osteoscope, and recording the pressure in the system at the commencement of bleeding.
