The Dowel Intervertebral-Body Fusion as Used in Lumbar-Disc Surgery

Wiltberger, B. R.

doi:10.2106/00004623-195739020-00004

Cited by 16 publications

(2 citation statements)

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“…The goal of spinal fusion is to obtain a solid arthrodesis. There is a wide range of fusion rates (56–95%) reported after PLIF with varying techniques [ 2 – 14 ].…”

Section: Introductionmentioning

confidence: 99%

The Memory Metal Minimal Access Cage: A New Concept in Lumbar Interbody Fusion—A Prospective, Noncomparative Study to Evaluate the Safety and Performance

Kok

Donk

Wapstra

et al. 2012

Advances in Orthopedics

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Study Design/Objective. A single-centre, prospective, non-comparative study of 25 patients to evaluate the performance and safety of the Memory Metal Minimal Access Cage (MAC) in Lumbar Interbody Fusion. Summary of Background Data. Interbody fusion cages in general are designed to withstand high axial loads and in the meantime to allow ingrowth of new bone for bony fusion. In many cages the contact area with the endplate is rather large leaving a relatively small contact area for the bone graft with the adjacent host bone. MAC is constructed from the memory metal Nitinol and builds on the concept of sufficient axial support in combination with a large contact area of the graft facilitating bony ingrowth and ease in minimal access implantation due to its high deformability. Methods. Twenty five subjects with a primary diagnosis of disabling back and radicular leg pain from a single level degenerative lumbar disc underwent an interbody fusion using MAC and pedicle screws. Clinical performance was evaluated prospectively over 2 years using the Oswestry Disability Index (ODI), Short Form 36 questionnaire (SF-36) and pain visual analogue scale (VAS) scores. The interbody fusion status was assessed using conventional radiographs and CT scan. Safety of the device was studied by registration of intra- and post-operative adverse effects. Results. Clinical performance improved significantly (P < .0018), CT scan confirmed solid fusion in all 25 patients at two year follow-up. In two patients migration of the cage occurred, which was resolved uneventfully by placing a larger size at the subsequent revision. Conclusions. We conclude that the Memory Metal Minimal Access Cage (MAC) resulted in 100% solid fusions in 2 years and proved to be safe, although two patients required revision surgery in order to achieve solid fusion.

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“…The goal of spinal fusion is to obtain a solid arthrodesis. There is a wide range of fusion rates (56–95%) reported after PLIF with varying techniques [ 2 – 14 ].…”

Section: Introductionmentioning

confidence: 99%

The Memory Metal Minimal Access Cage: A New Concept in Lumbar Interbody Fusion—A Prospective, Noncomparative Study to Evaluate the Safety and Performance

Kok

Donk

Wapstra

et al. 2012

Advances in Orthopedics

View full text Add to dashboard Cite

show abstract

“…The use of press-fit bone dowels is known in orthopaedic spinal surgery for interbody fusion since 1957 and is now a standard procedure (Wiltberger, 1957;Cauthen et al, 1998). Further orthopaedic applications like arthrodesis, tendon transplant fixation, and bone-tendon-bone grafts followed (Ward et al, 1988;Peterson, 1989;Sandow et al, 1992;Karladani et al, 2004;Gudas et al, 2005;Matsumoto et al, 2006).…”

Section: Introductionmentioning

confidence: 99%