[Interbody cage implantation in cadaveric model of the ram spine: biomechanical tests].

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.