A comparison of bone cement distribution with different puncturing guiders in vertebroplasty in calf vertebral osteoporosis models
YAO Fu-dong
LIU Xia-jun
WANG Xin-hu
Abstract：Objective To compare the distribution of bone cements injected by curved bone drill or straight bone drill in a vertebralosteoporosis model, and to further assess the application value of curved bone drill in the treatment of osteoporotic fractures.Methods Forty fresh calf thoracolumbar vertebral specimens ( T10-L5 ) that were soaked in ethylene diamine tetraacetic acid ( EDTA )-Na2 were prepared to construct the vertebral osteoporosis model in vitro. The samples were randomly divided into 2 groups,with 20 vertebral specimens in each group. The curved drill was used in the experimental group, and the straight drill was used in the control group. The vertebral pedicle puncture was performedunder the guide of X-ray, and the distances between the top of the drill to the middle-line of the vertebral body and the numbers of the top passed the middle line were measured. Percutaneous vertebroplasty ( PVP ) was also performed under the guide of x-ray, and the distribution and leakage rate of bone cements were recorded.Results The numbers of the top passed the middle line were 18 in the curved drill group and 7 in the straight drill group. The distances between the top of the drill to the middle-line of the vertebral body were ( 4.5±0.6 ) mm in the curved drill group and ( 1.1±1.5 ) mm in the straight drill group. There were statistically signiifcant differences in the number and distance between the 2 groups (P<0.05 ). The volumes of bone cements injected to the vertebra were ( 5.5±1.4 ) ml in the curved drill group and ( 4.1±1.1 ) ml in the straight drill group, and the differences were also statistically signiifcant (P<0.05 ). The numbers that the edge of bone cements reached or passed the middle line were 19 in the curved drill group and 11 in the straight drill group. The numbers ofbone cement leakage were 4 in the curved drill group and 9 in the straight drill group.Conclusions The model experiment shows the direction of puncture can be changed via the curved drill, andthe distribution of bone cementsis guided by the curved drill. The bone cementscan beequally distributed into both sides of the vertebra via unilateral puncture.
Keywords：SpineOsteoporotic fractureAnimal experimentationCementoplastyBone drill
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 291-294 )