The digital pressure monitor system used to measure intra-capsular pressure of cadaveric hip. The whole system consists of a 18-gauge 3.25-inch epidural needle (Perican® with Tuohy bevel, B. Braun Melsungen AG, Brazil), an unyielded 54-inch connection tubing designed for arterial line measurement, a 3-way stopcock, a 25 ml syringe, and the Quick Pressure Monitor Set mounted inside the Stryker Pressure Monitor (Stryker Inc, Cedex, France). The Quick Pressure Monitor Set consists of a membrane drum, and a 3 ml syringe. It is manufactured by the same company as the consumable for the pressure monitor. The system was primed with saline.