Adaptive Bone Remodeling Theory Applied to Cervical Laminoplasty

2011 ◽  
Author(s):  
Swathi Kode ◽  
Nicole A. Kallemeyn ◽  
Joseph D. Smucker ◽  
Douglas C. Fredericks ◽  
Nicole M. Grosland
Keyword(s):  
Spinal Cord ◽  
Computer Simulation ◽  
Bone Remodeling ◽  
Simulation Method ◽  
Contralateral Side ◽  
Cervical Laminoplasty ◽  
Open Door ◽  
Mechanical Signal ◽  
Wolff’S Law ◽  
Posterior Elements

Laminoplasty, considered an alternative to laminectomy, is intended to relieve pressure on the spinal cord while maintaining the stabilizing effects of the posterior elements of the vertebrae. Open-door laminoplasty (ODL) includes opening of the lamina from either the left or right side with the contralateral side acting as hinge. The main aim of laminoplasty is to recreate a stable laminar arch that preserves laminar opening. As hinge failure is a commonly encountered problem during laminoplasty, it is necessary to understand the process of bone remodeling post laminoplasty. This study aims at implementing a computer simulation method to predict bone remodeling in accordance with Wolff’s Law. Mathematical models are based on the principle that bone remodeling is induced by a local mechanical signal that activates regulating cells to adapt accordingly by changing either the internal or external morphology [5].

The Anatomical and Biomechanical Superiority of Novel Posterior En Bloc Elevation Cervical Laminoplasty

2021 ◽  
pp. 155335062098465
Author(s):  
Dong-Lai Wang ◽  
Guo-Qing Zhu ◽  
An-Quan Huang ◽  
Hong Zhang ◽  
Chuan Feng ◽  
...  
Keyword(s):  
Biomechanical Testing ◽  
Cervical Laminoplasty ◽  
Open Door ◽  
Lateral Bending ◽  
En Bloc ◽  
Cross Sectional ◽  
Expansion Pattern ◽  
Intact Condition ◽  
Axial Symptoms ◽  
The Common

Objectives. In this study, we performed a novel type of posterior en bloc elevation cervical laminoplasty (PEEL) to keep the integrity of the posterior structure, aiming to reduce axial symptoms complicated by a conventional cervical laminoplasty procedure. Methods. Twelve human cervical cadaveric spines (C2-T1) were sequentially tested in the following order: intact condition, open-door laminoplasty (ODL) through bilateral intermuscular approach (mini-invasive ODL), PEEL, and laminectomy (LN). After bilateral transecting at the junction of lamina and lateral mass through the tubular retraction system, the PEEL procedure symmetrically elevated all the posterior structure which was further stabilized with bone grafts and titanium plates. Computed tomography (CT) scan and biomechanical testing were performed after each condition. Results. Both mini-invasive ODL and PEEL procedures were accomplished with 2 small incisions on each side. Two types of laminoplasties could enlarge the spinal canal significantly both in cross-sectional area and anteroposterior diameter comparing with intact condition. The PEEL procedure demonstrated a significantly higher enlargement rate on a canal area and a symmetrical expansion pattern. Compared with intact condition, mini-invasive ODL performed from C3-C7 demonstrated significantly decreased motion in all testing directions except the flexion range of motion (ROM); the PEEL procedure showed mild and insignificant decrease on ROM in all directions. Laminectomy resulted in a statistically significant increase in all directions except the lateral bending ROM. Conclusions. Posterior en bloc elevation cervical laminoplasty can enlarge the canal more effectively and preserve better ROM after operation than the ODL procedure. Although technically challenging, the PEEL procedure probably would decrease the common complications associated with ODL laminoplasty.

OPEN-DOOR EXPANSILE CERVICAL LAMINOPLASTY

Neurosurgery ◽  
2007 ◽  
Vol 60 (suppl_1) ◽  
pp. S1-154-S1-159 ◽  
Author(s):  
Elizabeth Vitarbo ◽  
Rishi N. Sheth ◽  
Allan D. Levi
Keyword(s):  
Surgical Technique ◽  
Spinal Stenosis ◽  
Cervical Myelopathy ◽  
Outcome Data ◽  
Cervical Laminoplasty ◽  
Open Door ◽  
Cervical Spinal Stenosis ◽  
Current Article

Abstract OPEN-DOOR EXPANSILE laminoplasty is a practical surgical technique for the treatment of cervical myelopathy secondary to cervical spinal stenosis. Laminoplasty procedures were first described in the late 1970s and have undergone numerous modifications. The current article reviews the indications, techniques, and outcome data for cervical laminoplasty. Complications of laminoplasty and comparison to laminectomy outcomes are also discussed.

Spinal Cord Morphology and Dynamics During Cervical Laminoplasty

Spine ◽  
2007 ◽  
Vol 32 (21) ◽  
pp. 2306-2309 ◽  
Author(s):  
Hisanori Mihara ◽  
Soichi Kondo ◽  
Hidefumi Takeguchi ◽  
Motonori Kohno ◽  
Masashi Hachiya
Keyword(s):  
Spinal Cord ◽  
Cervical Laminoplasty

Percutaneous Ultrasonographic Evaluation of the Spinal Cord After Cervical Laminoplasty

Spine ◽  
2014 ◽  
Vol 39 (7) ◽  
pp. E434-E440 ◽  
Author(s):  
Kenji Kowatari ◽  
Taisuke Nitobe ◽  
Atsushi Ono ◽  
Toshihiro Tanaka ◽  
Taito Itabashi ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Cervical Laminoplasty

Acute traumatic central cord syndrome—experience using surgical decompression with open-door expansile cervical laminoplasty

2005 ◽  
Vol 63 (6) ◽  
pp. 505-510 ◽  
Author(s):  
Juan Uribe ◽  
Barth A. Green ◽  
Steven Vanni ◽  
Kapil Moza ◽  
James D. Guest ◽  
...  
Keyword(s):  
Surgical Decompression ◽  
Cervical Laminoplasty ◽  
Open Door ◽  
Central Cord Syndrome

scholarly journals Using Computer Simulation Method to Improve Throughput of Production Systems by Buffers and Workers Allocation

2015 ◽  
Vol 6 (4) ◽  
pp. 60-69 ◽  
Author(s):  
Sławomir Kłos ◽  
Peter Trebuna
Keyword(s):  
Computer Simulation ◽  
Production System ◽  
Production Systems ◽  
Simulation Method ◽  
System Throughput ◽  
Buffer Allocation ◽  
Simulation Experiments ◽  
Buffer Capacities ◽  
The Relationship ◽  
Support Decision Making

Abstract This paper proposes the application of computer simulation methods to support decision making regarding intermediate buffer allocations in a series-parallel production line. The simulation model of the production system is based on a real example of a manufacturing company working in the automotive industry. Simulation experiments were conducted for different allocations of buffer capacities and different numbers of employees. The production system consists of three technological operations with intermediate buffers between each operation. The technological operations are carried out using machines and every machine can be operated by one worker. Multi-work in the production system is available (one operator operates several machines). On the basis of the simulation experiments, the relationship between system throughput, buffer allocation and the number of employees is analyzed. Increasing the buffer capacity results in an increase in the average product lifespan. Therefore, in the article a new index is proposed that includes the throughput of the manufacturing system and product life span. Simulation experiments were performed for different configurations of technological operations.

scholarly journals All levels versus alternate levels plate fixation in expansive open door cervical laminoplasty

2014 ◽  
Vol 48 (6) ◽  
pp. 582 ◽  
Author(s):  
Hui-Lin Yang ◽  
Jun Qian ◽  
Zheng-Fei Wang ◽  
Guang-Dong Chen ◽  
Feng Xue ◽  
...  
Keyword(s):  
Plate Fixation ◽  
Cervical Laminoplasty ◽  
Open Door

The Effect of Open-Door Laminoplasty for Treatment of Acute Traumatic Cervical Spinal Cord Injury

2009 ◽  
Vol 5 (2) ◽  
pp. 74
Author(s):  
Young Ha Kim ◽  
Dong Wuk Son ◽  
Sung Hoon Kim ◽  
Sang Weon Lee ◽  
Geun Sung Song
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Cervical Spinal Cord ◽  
Cervical Spinal Cord Injury ◽  
Open Door ◽  
Cord Injury
Sign in / Sign up

Export Citation Format

Share Document