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- W2284701619 abstract "Objective: To study applied anatomy and mechanical test for placement of screw of pedicle-rib unit (PRU) in the thoracic spine. Methods: 35 specimens of cadaveric thoracic spine were used to measure the transverse distance (W), longitudinal distance (H), length (L) and angulation in the transverse plane (E).In the T10. T11 and T12 segments of 6 fresh cadaveric specimens, pedicle screw (group A), PRU screw (group B) and lateral penetrating pedicle screw (group C) were placed respectively to measure the maximum axial pull-out strength (F-max) and the energy absorption value (E-4mm) during pulling out of the screws for 4mm. Results: The W were 13.2~16.1 mm, L 38.5~52.7 mm, E 28.3o~15.4o, H 6.3~7.0 mm. In group A, the F-max was 808N, E-4 mm 1709 Nm. In group B, the F-max was 812 N, E-4 mm 1720Nm. In group C, the F-max was 795N, E-4 mm 687 Nm. There were no significantly statistical differences among the three groups (P＞0.05). Conclusion: Placement of PRU screw is safer than that of pedicle screw, and has better mechanical stability." @default.
- W2284701619 created "2016-06-24" @default.
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- W2284701619 date "2005-09-25" @default.
- W2284701619 modified "2023-09-27" @default.
- W2284701619 title "置入胸椎“椎弓根－肋骨”單元螺釘的應用解剖和力學測試" @default.
- W2284701619 hasPublicationYear "2005" @default.
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