A biomechanical analysis of decompression and reconstruction methods in the cervical spine. Emphasis on a carbon-fiber-composite cage

Biomechanical analysis of three different patterns of instability--that created by fifth and sixth cervical anterior discectomy, that created by one-level (fifth cervical) anterior corpectomy, and that created by two-level (fourth and fifth cervical) corpectomy--was performed in eighteen calf spines...

Full description

Saved in:
Bibliographic Details
Published in:Journal of bone and joint surgery. American volume 1993-11, Vol.75 (11), p.1674-1684
Main Authors: Shono, Y, McAfee, P C, Cunningham, B W, Brantigan, J W
Format: Article
Language:English
Subjects:
Animals
Biological and medical sciences
Biomechanical Phenomena
Bone Transplantation - methods
Bone Wires
Carbon
Carbon Fiber
Cattle
Cervical Vertebrae - physiopathology
Cervical Vertebrae - surgery
Diskectomy
Medical sciences
Methylmethacrylates
Orthopedic surgery
Plastics
Prostheses and Implants
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Biomechanical analysis of three different patterns of instability--that created by fifth and sixth cervical anterior discectomy, that created by one-level (fifth cervical) anterior corpectomy, and that created by two-level (fourth and fifth cervical) corpectomy--was performed in eighteen calf spines. Three types of anterior reconstruction--anterior iliac strut bone-grafting, use of an anterior carbon-fiber-composite cage packed with cancellous bone graft, as well as use of polymethylmethacrylate anteriorly--were cyclically tested in axial compression, torsion, and flexion-extension. Each of these types of reconstruction was also tested with supplemental posterior wire stabilization (the triple-wire technique of Bohlman). Regardless of the type of anterior instability, the carbon-fiber-reinforced cage packed with cancellous bone graft was more rigid than the iliac bone graft alone. The cage resulted in good stiffness in the axial compression and rotation tests and was the most rigid construct in the flexion-extension tests. The superior aspect of the polymethylmethacrylate constructs loosened at the bone-cement interface in eight of the twelve specimens during flexion-extension testing. The addition of the supplemental posterior wiring to the anterior constructs provided additional rigidity in flexion-extension testing.
ISSN:0021-9355
1535-1386
DOI:10.2106/00004623-199311000-00012