Influence of thread design on anchorage of pedicle screws in cancellous bone: an experimental and analytical analysis.

ABSTRACT: Threads of modern pedicle screws can vary greatly in design. It is difficult to assess which interplay of design features is particularly advantageous for screw anchorage. This study aims to increase the understanding of the anchorage behaviour between screw and cancellous bone. Pull-out tests of six pedicle screws in two sizes each were performed on three densities of biomechanical test material. More general screw characteristics were derived from the screw design and evaluated using the test data. Selected screws were tested on body donor material. Some screw characteristics, such as compacting, are well suited to compare the different thread designs of screws with tapered core. The combination of two characteristics, one representing bone compacting and one representing thread flank ar

SUBMITTER: Weidling M 

PROVIDER: S-EPMC9110386 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature