Fusion Rate and Biomechanical Stiffness of Hydroxylapatite Versus Autogenous Bone Grafts for Anterior Discectomy

Pintar, Frank A.; Maiman, Dennis J.; Hollowell, James P.; Yoganandan, Narayan; Droese, Karl; Reinartz, John; Cuddy, Brian G.

doi:10.1097/00007632-199411001-00006

Cited by 55 publications

(28 citation statements)

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“…These major or minor fractures could be yielded by either the violent manoeuvres during the intervention or the segmental micromotion after operation because of the lack of reliable fixation. The dense HA blocks were superior in maintaining disc space height [2,4,17]. But both dense [2] and porous HA [9,22] fractured, even leading to spinal cord compression.…”

Section: Discussionmentioning

confidence: 97%

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Clinical, radiological and histological study of the failure of cervical interbody fusions with bone substitutes

et al. 2006

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Section: Discussionmentioning

confidence: 97%

“…The complications of these materials in the cervical spine should be highlighted. cervical spine has been reported in animal experiments and clinical studies [2,4,11,17,19]. However, the rigorous mechanical circumstance of cervical spine requires superior C-P ceramics with special structure and high biocompatibility.…”

mentioning

confidence: 99%

Clinical, radiological and histological study of the failure of cervical interbody fusions with bone substitutes

et al. 2006

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“…For this reason, animal vertebral columns were used for testing since these are readily available. The biomechanical tests were carried out using vertebral columns from pigs [38], goats [6,45], sheep [63], rabbits [12,22] and calves [1,37,67]. Nonetheless, calf lumbar spines appear to offer the best alternative as a substitute material since bone density is comparable to the human, and the pedicles are also of a similar size, although there is a complete growth plate in bovine animals as opposed to fused ring apophyses of human adults [10,64].…”

Section: Discussionmentioning

confidence: 99%

Primary stability of anterior lumbar stabilization: interdependence of implant type and endplate retention or removal

et al. 2005

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“…The cervical curvature (lordosis) and biomechanical characteristics of the goat neck have been shown to closely approximate those of the human spine [4,39,44,52,53,54,56].…”

Section: Methodsmentioning

confidence: 99%

Biomechanics of cervical laminoplasty: kinetic studies comparing different surgical techniques, temporal effects and the degree of level involvement

Puttlitz

Deviren

Smith

et al. 2004

European Spine Journal

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Laminoplasty is a common surgical technique used to treat cervical myelopathy. Both voids and contradictory information exist in the literature with regard to the initial and long-term biomechanical consequences of cervical laminoplasty. In order to clarify the existing literature, as well as provide clinically useful information, we identified three specific aims: (1) to measure the long-term differences in kinetics between the open door laminoplasty (ODL) and French door laminoplasty (FDL) techniques; (2) to delineate differences in primary and long-term cervical motion after laminoplasty; and (3) to determine whether inclusion of additional levels in the laminoplasty procedure results in a change in immediate cervical biomechanics. The study design involved both an animal (caprine) model and in vitro surgical simulation. We kinematically evaluated the cervical spine specimens (C2-C7) by applying pure bending moment loads to the cephalad vertebra (C2), while constraining the caudal vertebra (C7). Resultant intervertebral rotations (C3-C6) were determined via stereophotogrammetry. Overall, the data indicate that both FDL and ODL significantly reduce range of motion 6 months postoperatively, compared with the un-operated spine. There were no significant differences between the two techniques after 6 months. We also showed that ODL produces a significant reduction in motion 6 months postoperatively compared with the immediate postoperative condition. Finally, the data indicated that extending the laminoplasty from two to four levels did not significantly change range of motion. The choice of technique should be based upon the surgeon's experience with these technically demanding procedures. In addition, initial stability considerations should not affect the decision to extend the laminoplasty to adjacent levels. Finally, the data also suggest that early changes in biomechanics should not be a major factor when considering whether immobilization of the cervical spine is necessary after laminoplasty. In fact, our temporal study, as well as previously reported clinical data, indicates that one should expect significantly decreased intervertebral motion 6 months after laminoplasty. Therefore, early physical therapy should be considered to preserve a more physiologic pattern of cervical range of motion.

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Fusion Rate and Biomechanical Stiffness of Hydroxylapatite Versus Autogenous Bone Grafts for Anterior Discectomy

Cited by 55 publications

References 0 publications

Clinical, radiological and histological study of the failure of cervical interbody fusions with bone substitutes

Clinical, radiological and histological study of the failure of cervical interbody fusions with bone substitutes

Primary stability of anterior lumbar stabilization: interdependence of implant type and endplate retention or removal

Biomechanics of cervical laminoplasty: kinetic studies comparing different surgical techniques, temporal effects and the degree of level involvement

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