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[Interbody cage implantation in cadaveric model of the ram spine: biomechanical tests]
O A Spirin1,2, M M Aleksanyan1,2, S A Makarov1,2
1Petrovsky National Research Center of Surgery, Moscow, Russia.
Objective:
To evaluate the mechanical properties of poly(L-lactide) cage prototypes on cadaveric models of the lumbar spine ram model.
Material And Methods:
Prototypes of neck devices were developed on the Ender 2v2 3D printer («Shenzhen Creality 3D Technology Co., Ltd.», China). We analyzed mechanical properties of experimental cages. Single-level lumbar discectomy and fusion with poly(L-lactide) and poly-ε-caprolactone cage was performed on 4 cadaver models. Subsequent mechanical tests of vertebral segment were conducted on Instron 5965 electromechanical testing machine (Instron, A Division of Illinois Tool Works, Inc., USA).
Results:
Static and cyclic tests revealed rigidity, adequate fixation and no migration of cages.
Conclusion:
Biocompatible biodegradable cages is a perspective direction in medicine. Considering high incidence of postoperative complications associated with migration and subsidence of non-resorbable cages, we can assume that biodegradable implants can become a competitive analogue for spinal fusion.
