Both the aluminum block and the mobile, ball-mounted platform remained dry at all times.
To achieve this, we decided on a mobile, ball-mounted technique.
We therefore conclude that, used in the three-point bending/breaking test, the mobile, ball-mounted platform device is able to efficiently eliminate the influence of friction in terms of stiffness and yield load.
The height of the mobile, ball-mounted platform, when placed atop of the 10 balls, was 1.3 cm, which equaled the same height as to when the aluminum block was used.
Also, this paper aims to provide a technological solution for the elimination of this methodological problem by using a newly-designed mobile, ball-mounted platform that allows a friction-free lengthening of the diaphysis during the force application phase.
In conclusion, the newly designed mobile, ball-mounted platform device for biomechanical testing was used to evaluate the biomechanical properties of the metaphysis of long bones, in this case of rat tibiae.
The tibiae were tested on two consecutive days, always completely testing one group on the same day to keep testing conditions as constant as possible, and thus avoiding potential data errors due to setup changes and altered testing conditions from aluminum block to mobile, ball-mounted platform.
The statistical evaluation of the different values for stiffness, yield load, and failure load for the tibiae tested on the aluminum block and the tibiae tested on the mobile, ball-mounted platform were analyzed in a paired t-test where p < 0.005 was considered to be significant.
In order to ensure a stable gliding of the mobile, ball-mounted platform, measuring 3.8 cm × 4 cm × 0.9 cm (length × width × height) with a top area of 1.4 cm × 4 cm (length × width), we used a consecutive series of 5 stainless steel balls on each side with a distance of 0.5 cm between the balls.
