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- W2368112830 abstract "Objective:To test the biomechanical stability of varied segment pedicle screw instrumentation following a single segment of anterior and mid column spine corpectomy and to explore the feasibility of a single segment fixation for spinal anterior and mid column lesions.Method:10 fresh calf spines(T10～L5) were used.The range of motion(ROM) of intact spines was tested as control.After simulating the modal of anterior and mid column resection along with resection of L1/2 intervertebral discs and adjacent end plates(total 2cm high),autogeneous iliac bony graft struting in situ,the models were subjected to posterior instrumentation of long segment pedicle instrumentation(LSPI),short segment pedicle instrumentation(SSPI),a single segment instrumentation by long pedicle screw(MILPS) and a single segment instrument by short pedicle screw(SISPS) respectively.The ROM of different instrumentations in axial compression,lateral bending,flexion-extension and rotation were tested.The relative range of movement(RROM) was tested either.Result:The RROM in LSPI and SSPI was significantly smaller than that in MILPS and SISPS in all loading directions(P0.05).However,no statistical difference of the RROM was found between MISPS and SILPS(P0.05).The ROM in MILPS and SISPS was smaller than that in control group(P0.05).Conclusion:The stability provided by single segment instrumentation is significantly inferior to that by LSPI and SSPI,but superior to intact spine,after iliac struting in the anterior and mid column,SISPS can provide equal instant stability to MILPS." @default.
- W2368112830 created "2016-06-24" @default.
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- W2368112830 date "2010-01-01" @default.
- W2368112830 modified "2023-09-24" @default.
- W2368112830 title "Biomechanical test of varied segment pedicle screw instrumentation following a single segment of anterior and mid column spine corpectomy" @default.
- W2368112830 hasPublicationYear "2010" @default.
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