Commentary: Vertebral Body Replacement With an Anchored Expandable Titanium Cage in the Cervical Spine: A Clinical and Radiological Evaluation

2020 ◽  
Vol 20 (1) ◽  
pp. E35-E36
Author(s):  
Lee A Tan
Keyword(s):  
Cervical Spine ◽  
Vertebral Body ◽  
Vertebral Body Replacement ◽  
Radiological Evaluation ◽  
Titanium Cage ◽  
Expandable Titanium Cage

Vertebral Body Replacement With an Anchored Expandable Titanium Cage in the Cervical Spine: A Clinical and Radiological Evaluation

2020 ◽  
Vol 20 (1) ◽  
pp. 109-118 ◽  
Author(s):  
Natan Yusupov ◽  
Sebastian Siller ◽  
Johann Hofereiter ◽  
Heinrich Karl Boehm ◽  
Manuel Fuetsch ◽  
...  
Keyword(s):  
Cervical Spine ◽  
Vertebral Body ◽  
Sagittal Profile ◽  
Vertebral Body Replacement ◽  
Radiological Evaluation ◽  
Titanium Cage ◽  
Single Level ◽  
Anterior Corpectomy ◽  
Expandable Titanium Cage

Abstract BACKGROUND Expandable cervical cages have been used successfully to reconstruct the anterior spinal column. OBJECTIVE To perform clinical and radiological evaluation of vertebral body replacement with an anchored expandable titanium cage in the cervical spine after single-level and 2-level corpectomies. METHODS Between 2011 and 2017, 40 patients underwent a single-level (N = 32) or 2-level (N = 8) anterior corpectomy and fusion using an anchored expandable vertebral body replacement cage. Clinical and radiological data at admission, postoperatively, and at 3- and 12-mo follow-up were retrospectively analyzed. Clinical assessment was performed via standardized neurological evaluation, Odom score, and McCormick classification. Radiological assessment was performed via evaluation of sagittal profile, postoperative position, fusion, and subsidence rates. RESULTS Mean last follow-up was 14.8 ± 7 mo. Overall clinical and myelopathy-related improvements were shown directly after operation and at last follow-up. A stable centralized positioning of cages was achieved in 37 patients (93%). A mild ventral (>1.5 mm) malplacement was noted in 3 patients (7%) without clinical consequences. Sagittal alignment and preoperative cervical kyphosis improved significantly (7.8° gain of lordosis) and remained stable. Mean preoperative height of operated segments increased by 10 mm postoperatively and remained stable. Fusion rate in non-neoplastic patients and subsidence rate at last follow-up comprised 87.5% and 17.8%. With exception of 1 patient suffering from severe osteoporosis and cage subsidence, no patient needed additional secondary stabilization. CONCLUSION Anterior corpectomy and fusion by an expandable anchored titanium cage with anchor screws without additional instrumentation resulted in overall clinical improvement and radiological anterior column support, achieving significant and reliable restoration of the physiological sagittal cervical profile.

Acrylic Stabilization of the Cervical Spine for Neoplastic Disease: Evolution of a Technique for Vertebral Body Replacement

Neurosurgery ◽  
1983 ◽  
Vol 13 (1) ◽  
pp. 23-29 ◽  
Author(s):  
William M. Chadduck ◽  
Warren C. Boop
Keyword(s):  
Cervical Spine ◽  
Cancer Patients ◽  
Vertebral Body ◽  
Cervical Spinal Cord ◽  
Vertebral Body Replacement ◽  
Neoplastic Disease ◽  
Disease Evolution ◽  
Pin Fixation ◽  
Progression Of Disease ◽  
Vertebral Bodies

Abstract The resection of collapsed cervical vertebral bodies affected by malignant lytic lesions often requires innovative methods for stabilization. Over the years, immediate stabilization of the cervical spine has been achieved with acrylic bridges, preformed metallic placement bodies, fibular strut grafts, and other aids. Because acrylic bonds poorly to adjacent bony structures, techniques to assure the adequate fixation of an acrylic bridge between resected vertebral bodies are needed. The possible progression of disease in adjacent bone prompts us to maximize the amount of internal fixation with rods or pins to assure stability. Lasting stability has become more important as the longevity of cancer patients has been increased by multimodality therapy. We report our technique for treating cancer patients with acrylic and pin fixation of the cervical spine after vertebral body excision by the anterior route. Certain modifications of the technique may have advantages over previously reported procedures. Our series of six cases demonstrates the evolution of a technique that allows relatively rapid and easy decompression of the cervical spinal cord and provides immediate stability of the cervical spine. Our indications and contraindications for this procedure are also discussed.

Design of Biomechanical Testing Methods and Metrics to Evaluate the Performance of Synthetic Spinal Implants Versus Bone Graft for Lumbar Corpectomy

2007 ◽  
Author(s):  
P. Huang ◽  
N. Sarigul-Klijn ◽  
S. Hazelwood ◽  
M. Gupta ◽  
R. Roberto
Keyword(s):  
Bone Graft ◽  
Vertebral Body ◽  
Spinal Injury ◽  
Biomechanical Testing ◽  
Vertebral Body Replacement ◽  
Testing Procedures ◽  
Metallic Implants ◽  
The Stability ◽  
Expandable Titanium Cage ◽  
Lumbar Corpectomy

The human spine is a mechanically complex system of joints crucial for stable posture and movement. The ultimate goal of a vertebral body replacement following a spinal injury that necessitates such a procedure is to have the replacement strut fully incorporate into the spine. This incorporation process is known as bony “fusion”, which facilitates the restoration of stability. Bone graft and metallic implants have been used for vertebral body replacement procedures. Both methods have been associated with failure of fusion and recurrence of instability. The development and rationale of the mechanical testing procedures implemented to best differentiate the stability afforded by bone graft versus expandable titanium cage is presented.

Biomechanical comparison of expandable cages for vertebral body replacement in the cervical spine

2003 ◽  
Vol 99 (1) ◽  
pp. 91-97 ◽  
Author(s):  
Frank Kandziora ◽  
Robert Pflugmacher ◽  
Jan Schaefer ◽  
Matti Scholz ◽  
Kathrin Ludwig ◽  
...  
Keyword(s):  
Cervical Spine ◽  
Vertebral Body ◽  
Vertebral Body Replacement ◽  
Biomechanical Comparison ◽  
Expandable Cages

scholarly journals Thoracoscopic Vertebral Body Replacement of Burst Fractures in the Thoracolumbar Spine with a Distractable Titanium Cage

2016 ◽  
Vol 6 (1_suppl) ◽  
pp. s-0036-1582674-s-0036-1582674
Author(s):  
Christof Wutte ◽  
Reinhold Ortmaier ◽  
Herbert Resch ◽  
Fabian Plachel ◽  
Robert Bogner
Keyword(s):  
Vertebral Body ◽  
Thoracolumbar Spine ◽  
Vertebral Body Replacement ◽  
Titanium Cage ◽  
Burst Fractures
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