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Study Design Narrative review. Objective To elucidate the current concepts in diagnosis and treatment of traumatic spondylolisthesis of the axis. Methods Literature review using PubMed, Google Scholar, and Cochrane databases. Results The traumatic spondylolisthesis of the axis accounts to 5% of all cervical spine injuries and is defined by a bilateral(More)
STUDY DESIGN An in vitro biomechanical study of expandable cages for vertebral body replacement in the human thoracolumbar spine. OBJECTIVES The purpose of this study was to compare the in vitro biomechanical properties of 3 different expandable cages with a nonexpandable cage. SUMMARY AND BACKGROUND DATA Recently, there has been a rapid increase in the(More)
STUDY DESIGN In vitro biomechanical study of bioabsorbable cervical spine interbody fusion cages using a sheep model. OBJECTIVES The purpose of this study was to evaluate the segmental stability provided by 2 new developed bioabsorbable cervical spine interbody fusion cages and to compare it with a tricortical iliac crest bone graft and a titanium meshed(More)
OBJECT Beside several other advantages, the transforaminal approach for lumbar interbody fusion offers the possibility of reducing surgical trauma by limiting the approach to only 1 side. This requires posterior stabilization methods, which are applied without the need to damage contralateral muscles and soft tissues. The goal in this study was to compare(More)
PURPOSE In this study we examined the tensile strength of core sutures of tendons. In particular, we examined the effect of having 2 or 4 stitch strands in the core suture as well as the effect of additional locking sutures on the tensile strength. MATERIAL AND METHOD 60 flexor tendons from the forepaws of freshly slaughtered swines were harvested for(More)
STUDY DESIGN A new anchored spacer-a low-profile cervical interbody fusion cage with integrated anterior fixation-was compared biomechanically to established anterior cervical devices. OBJECTIVE To evaluate the fixation properties of the new stand-alone device and compare these properties with established fixation methods. The hypothesis is that the new(More)
STUDY DESIGN After anterior cervical discectomy, fusion was radiologically, biomechanically, and histologically assessed in a sheep spine fusion model. OBJECTIVE To evaluate the efficacy of a platelet-rich plasma (PRP) application combined with a mineralized collagen matrix (MCM) as an alternative to autologous cancellous iliac crest bone grafts in a(More)
Segmental instability in degenerative disc disease is often treated with anterior lumbar interbody fusion (ALIF). Current techniques require an additional posterior approach to achieve sufficient stability. The test device is an implant which consists of a PEEK-body and an integrated anterior titanium plate hosting four diverging locking screws. The test(More)
STUDY DESIGN In vitro biomechanical investigation of the screw-holding capacity. OBJECTIVE To evaluate the effect of repetitive screw-hole use on the insertional torque and retentive strength of vertebral system screws. SUMMARY AND BACKGROUND DATA Placement and removal of vertebral system screws is sometimes necessary during the surgical procedures in(More)
STUDY DESIGN In vitro biomechanical analysis of different multilevel cervical fixation techniques. OBJECTIVE To compare the multilevel stability of a cervical anchored spacer (AS) with established fixation techniques. SUMMARY OF BACKGROUND DATA To avoid plate-related complications, for example, dysphagia zero-profile AS has been developed. The use of(More)