The future of spinal arthroplasty: a biomaterial perspective

2004 ◽  
Vol 17 (3) ◽  
pp. 1-14 ◽  
Author(s):  
Rod J. Oskouian ◽  
Richard Whitehill ◽  
Amir Samii ◽  
Mark E. Shaffrey ◽  
J. Patrick Johnson ◽  
...  
Keyword(s):  
Intervertebral Disc ◽  
Host Response ◽  
Clinical Results ◽  
Disc Replacement ◽  
Facet Joints ◽  
Artificial Disc ◽  
Functional Spinal Unit ◽  
Hip And Knee Arthroplasty ◽  
Spinal Arthroplasty ◽  
Low Incidence

Both total hip and knee arthroplasty have demonstrated outstanding clinical results. The functional spinal unit composed of the intervertebral disc and facet joints is at least as complex. The intricacies of the coupled motions of the functional spinal unit have made development of an artificial disc a challenge. There have been several failed attempts to create a disc replacement that recapitulates normal motion while providing significant longevity and a low incidence of complications. Better understanding of the biomechanics of the intervertebral disc complex and improvements in implant material have made successful intervertebral disc replacement a likely reality, now that several artificial discs have completed Food and Drug Administration clinical trials. In this manuscript the authors detail the biomaterials used in disc arthroplasty and discuss joint wear and the host response to wear debris.

Biomechanics of the posterior lumbar articulating elements

2007 ◽  
Vol 22 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Hassan A. Serhan ◽  
Gus Varnavas ◽  
Andrew P. Dooris ◽  
Avinash Patwardhan ◽  
Michael Tzermiadianos
Keyword(s):  
Spinal Fusion ◽  
Joint Replacement ◽  
Facet Joint ◽  
Total Joint Replacement ◽  
Clinical Success ◽  
Disc Replacement ◽  
Facet Joints ◽  
Chronic Instability ◽  
Functional Spinal Unit

✓The clinical success of lumbar spinal fusion varies considerably, depending on techniques and indications. Although spinal fusion generally helps to eliminate certain types of pain, it may also decrease function by limiting patient mobility. Furthermore, spinal fusion may increase stresses on adjacent nonfused motion segments, accelerating the natural degeneration process at adjacent discs. Additionally, pseudarthrosis, that is, incomplete or ineffective fusion, may result in an absence of pain relief. Finally, the recuperation time after a fusion procedure can be lengthy. The era of disc replacement is in its third decade, and this procedure has demonstrated promise in relieving back pain through preservation of motion. Total joint replacement with facet arthroplasty of the lumbar spine is a new concept in the field of spinal surgery. The devices used are intended to replace either the entire functional spinal unit (FSU) or just the facets. These devices provide dynamic stabilization for the functional spinal segment as an adjunct to disc replacement or laminectomy and facetectomy performed for neural decompression. The major role of facet replacement is to augment the instabilities created by the surgical decompression or to address chronic instability. Additionally, facet joint replacement devices can be used to replace the painful facet joints, restore stability, and/or to salvage a failed disc or nucleus prosthesis without losing motion. In this paper the authors review and discuss the role of the lumbar facet joints as part of the three-joint complex and discuss their role in intersegmental motion load transfer and multidirectional flexibility in a lumbar FSU.

Mechanical failure of the Mobi-C implant for artificial cervical disc replacement: report of 4 cases

2020 ◽  
Vol 33 (6) ◽  
pp. 727-733
Author(s):  
Jasmine A. T. DiCesare ◽  
Alexander M. Tucker ◽  
Irene Say ◽  
Kunal Patel ◽  
Todd H. Lanman ◽  
...  
Keyword(s):  
Cervical Spondylosis ◽  
Case Series ◽  
Dynamic Imaging ◽  
Disc Replacement ◽  
Cervical Disc ◽  
Artificial Disc ◽  
Younger Patients ◽  
Cervical Disc Replacement ◽  
Short And Long Term

Cervical spondylosis is one of the most commonly treated conditions in neurosurgery. Increasingly, cervical disc replacement (CDR) has become an alternative to traditional arthrodesis, particularly when treating younger patients. Thus, surgeons continue to gain a greater understanding of short- and long-term complications of arthroplasty. Here, the authors present a series of 4 patients initially treated with Mobi-C artificial disc implants who developed postoperative neck pain. Dynamic imaging revealed segmental kyphosis at the level of the implant. All implants were locked in the flexion position, and all patients required reoperation. This is the first reported case series of symptomatic segmental kyphosis after CDR.

scholarly journals Access strategies for revision or explantation of the Charité lumbar artificial disc replacement

2006 ◽  
Vol 44 (6) ◽  
pp. 1266-1272 ◽  
Author(s):  
Willis H. Wagner ◽  
John J. Regan ◽  
Scott P. Leary ◽  
Todd H. Lanman ◽  
J. Patrick Johnson ◽  
...  
Keyword(s):  
Disc Replacement ◽  
Artificial Disc ◽  
Artificial Disc Replacement
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