In this paper, microscopic behavior of a preloaded ball screw supported by ball bearings is discussed based on experimental results and simulation.
The glass could be tilted at any angle by means of the swivel screws supporting it, and its height could be adjusted by means of lead counterweights and a horse, or pulley, from which the name was taken.
Based on their observations, they suggested that traction forces from the rotator cuff should be neutralized using tension band sutures combined with screws supporting the medial calcar, especially when medial support is insufficient.
Proximal screws support the dorsal subchondral bone; distal screws support the central subchondral bone.
With DSS, proximal screws support the dorsal subchondral bone from the proximal screws, whereas distal screws support the central subchondral bone from the distal row (as determined from a lateral view; Fig. 1).
Double-tiered subchondral support (DSS) procedure is two-row fixation in which proximal screws support the dorsal subchondral bone, whereas distal screws support the volar central subchondral bone, using the volar variable-angle locking plate to achieve better anatomical reduction.
Standard radiograms were also used to assess how the fenestrated screws supported the bone fusion: the presence of trabecular bone bridging the interspace between the adjacent vertebral bodies.
Distal screws support the central subchondral bone and transmit the axial force from the subchondral bone to the intact diaphyseal bone [11].
Open image in new window Figure 8 Thermal imaging of the screw support bearings [74] Open image in new window Figure 9 Thermal imaging of the screw nut [74] Open image in new window Figure 10 Thermal imaging of the headstock temperature field [75].
Mau J, Behneke A, Behneke N, Fritzmeier CU, Gomez-Roman G, d'Hoedt B, et al. Randomized multicenter comparison of 2 IMZ and 4 TPS screw implants supporting bar-retained overdentures in 425 edentulous mandibles.
