Predictive modelling of cervical disc implant wear

2008 ◽  
Vol 41 (15) ◽  
pp. 3177-3183 ◽  
Author(s):  
C.U. de Jongh ◽  
A.H. Basson ◽  
C. Scheffer
Keyword(s):  
Predictive Modelling ◽  
Cervical Disc ◽  
Implant Wear

Did Thomas More have a Cervical Disc Lesion?

Moreana ◽  
1984 ◽  
Vol 21 (Number 83-8 (3-4) ◽  
pp. 27-32
Author(s):  
Salvador Hernandez Conesa
Keyword(s):  
Cervical Disc ◽  
Thomas More

The Feasibility of Optimal Surgical Result Prediction according to the Centre of Rotation Shift after Multilevel Cervical Total Disc Replacement

2018 ◽  
Vol 1 (2) ◽  
pp. 6
Author(s):  
Jun Ho Lee
Keyword(s):  
Rating Scale ◽  
Clinical Success ◽  
Total Disc Replacement ◽  
Numeric Rating Scale ◽  
Disc Replacement ◽  
Cervical Disc ◽  
Consecutive Series ◽  
Cervical Total Disc Replacement ◽  
Successful Group ◽  
Centre Of Rotation

Objective: This study investigates the relation between shifted locations of centre of rotation (COR) at each cervical level and subsequent surgical outcomes after multilevel cervical total disc replacement (MCTDR) and identifies radiological parameter that corresponded to change of COR after MCTDR. Methods: The study included a consecutive series of 24 patients who were treated with MCTDR following diagnosis of multilevel cervical disc herniation or stenosis. Numeric rating scale (NRS), range of motion (ROM) at both C2-7 segment and TDR implanted levels, and the location of COR at TDR implanted level were evaluated at pre- and post-MCTDR. These parameters were compared between patients who experienced successful and unsuccessful pain relief.Results: The inherent CORs relatively at ventro-cranial coordinates have demonstrated significant migrations to dorso-caudal locations at each cervical levels, more prominent shifts for the successful group, after MCTDR switch. The unsuccessful group showed markedly reduced C2-7 ROM and reduced angular improvement at C2-7 as well as MCTDR level after surgery in comparison with the successful group. Postoperative C2-7 ROM was related to postoperative COR along the X-axis.Conclusions: The crucial determinants for clinical success after MCTDR, other than mere preservation of the ROM both at C2-7 and TDR implanted levels, was the restoration of COR from ventro-cranial location at degenerated cervical motion segment close to normal coordinates by posterior and inferior shifts after MCTDR. The position of COR along the X-axis after MCTDR was an important factor to determine maintenance of C2-7 RO.

Cervical brucellar spondylodiscitis mimicking a cervical disc herniation with epidural abscess: a case report

2014 ◽  
Vol 0 (0) ◽  
Author(s):  
Ahmet Aslan ◽  
Ünal Kurtoğlu ◽  
Mustafa Özgür Akça ◽  
Sinan Tan ◽  
Uğur Soylu ◽  
...  
Keyword(s):  
Case Report ◽  
Disc Herniation ◽  
Epidural Abscess ◽  
Cervical Disc Herniation ◽  
Cervical Disc

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.

Sugar factory audits, debottlenecking and efficiency improvement

2020 ◽  
pp. 607-612
Author(s):  
Bernard Coûteaux
Keyword(s):  
Evaluation Method ◽  
Predictive Modelling ◽  
Cane Sugar ◽  
Sugar Factory ◽  
Low Energy Consumption ◽  
Process Simulations ◽  
Capital Efficiency ◽  
Potential Improvement ◽  
Primary Focus

This paper elaborates on the key solutions offered by De Smet Engineers & Contractors (DSEC) to optimize the efficiency of cane sugar producing and processing facilities. In order to meet customer needs, DSEC offers proprietary predictive models built using the latest versions of specialized software. These models allow factory managers to envision the whole picture of increased operational and capital efficiency before it becomes reality. An integrated energy model and the CAPEX/OPEX evaluation method are discussed as ways to estimate and optimize costs, both for new greenfield projects and revamping of existing factories. The models demonstrate that factory capacities can be successfully increased using equipment that is already available. Special attention is paid to crystallization and centrifugation process simulations and the potential improvement of the global energy balance. One case study shows the transformation of a beet sugar factory into a refinery to process raw cane sugar after beet crop season and the second case shows the integration of a refinery into a cane sugar factory. The primary focus of the article is optimization of the technological process through predictive modelling. DSEC’s suggested solutions, which lead to great improvements in a plant’s efficiency and its ability to obtain very low energy consumption, are discussed.

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