Characterization of lumbar spinous process morphology: a cadaveric study of 2,955 human lumbar vertebrae

2015 ◽  
Vol 15 (7) ◽  
pp. 1645-1652 ◽  
Author(s):  
Jeremy D. Shaw ◽  
Daniel L. Shaw ◽  
Daniel R. Cooperman ◽  
Jason D. Eubanks ◽  
Ling Li ◽  
...  
Author(s):  
Isha Godwin ◽  
. Girimurugan

Background: Spinal anaesthesia is the commonest regional anaesthesia conducted for several surgical procedures. Objectives: This study aims to predict the difficulty score of spinal anaesthesia to scale back the complications and ultimately improve anaesthesia quality. Materials and Methods: Patients undergoing various surgeries involving spinal anaesthesia were taken in this study and several parameters like demographic details, body mass index, spinous process condition were recorded pre operatively to see how they influenced the difficulty of performing spinal anesthesia on them. Results: Out of the 101 patients enrolled in this study, 53 underwent an easy SA by the first attempt in the first space. It was moderate in 36 and difficult in 12 patients. Conclusion: Considering the examination of patients with respect to BMI, lumbar spinous process status and deformities, radiological signs of lumbar vertebrae can be helpful in predicting how difficult the SA procedure is going to be.


Author(s):  
Amy A. Claeson ◽  
David J. Nuckley ◽  
Victor H. Barocas

The lumbar facet joint (FJ) is a unique structure located on the posterior spine. The joint is composed of two articular facets from adjacent vertebrae, which are connected by a flexible and strong facet capsular ligament (FCL) (Figure 1). Two FJs (one on each side of the spinous process) are located at every spine level and along with the IVD, create a motion segment. During spinal flexion and extension, the FCL undergoes a complex motion, with extension and shear dominating the deformation (Figure 2). The collagenous FCL guides and restricts the relative motion of adjacent vertebra in flexion.


2014 ◽  
Vol 14 (11) ◽  
pp. S179-S180
Author(s):  
Jeremy D. Shaw ◽  
Daniel L. Shaw ◽  
Jason D. Eubanks ◽  
David H. Kim

2015 ◽  
Vol 48 (1) ◽  
pp. 91-95
Author(s):  
B. Cai ◽  
B. Ran ◽  
Q. Li ◽  
Z.H. Li ◽  
F.N. Li ◽  
...  

2003 ◽  
Vol 95 (4) ◽  
pp. 1467-1475 ◽  
Author(s):  
D Shirley ◽  
P. W. Hodges ◽  
A. E. M. Eriksson ◽  
S. C. Gandevia

Posteroanterior stiffness of the lumbar spine is influenced by factors, including trunk muscle activity and intra-abdominal pressure (IAP). Because these factors vary with breathing, this study investigated whether stiffness is modulated in a cyclical manner with respiration. A further aim was to investigate the relationship between stiffness and IAP or abdominal and paraspinal muscle activity. Stiffness was measured from force-displacement responses of a posteroanterior force applied over the spinous process of L2and L4. Recordings were made of IAP and electromyographic activity from L4/L2erector spinae, abdominal muscles, and chest wall. Stiffness was measured with the lung volume held at the extremes of tidal volume and at greater and lesser volumes. Stiffness at L4and L2increased above base-level values at functional residual capacity (L214.9 N/mm and L415.3 N/mm) with both inspiratory and expiratory efforts. The increase was related to the respiratory effort and was greatest during maximum expiration (L224.9 N/mm and L423.9 N/mm). The results indicate that changes in trunk muscle activity and IAP with respiratory efforts modulate spinal stiffness. In addition, the diaphragm may augment spinal stiffness via attachment of its crural fibers to the lumbar vertebrae.


2015 ◽  
Vol 29 (9) ◽  
pp. 766-771 ◽  
Author(s):  
Kayo Nishimatsu ◽  
Yuji Nakamoto ◽  
Takayoshi Ishimori ◽  
Kaori Togashi

Sign in / Sign up

Export Citation Format

Share Document