MEASUREMENT OF INTRADISCAL PRESSURE By ALF NACHEMSON The nucleus pulposus consists of a three dimensional network of collagen fibres, enmeshed in a mucoprotein gel which contains various mucopolysaccharides (Hirsch, Paulson, SylvCn & Snellman ; Bernardi, Happey & Naylor). The water content of the nucleus pulposus dimin-

Nachemson, A. 1963: The influence of spinal movements on the lumbar intradiscal pressure and on the tensile stresses in the annulus fibrosus. Acta Orthop. Scand .

The water content of the nucleus pulposus dimin- ALF NACHEMSON Lumbar Intradiscal Pressure Experimental studies on post-mortem material EJNAR MUNKSGAARD - COPENHAGEN 1960 . 0 1960 by ALF NACHEMSON, Sweden Nachemson A. (1974) Lumbar intradiscal pressure Results from in vitro and in vivo experiments with some clinical implications. In: Hartmann F. (eds) Biopolymere und Biomechanik von Bindegewebssystemen. SUMMARY A method by which the pressure in the nucleus pulposus of the lumbar disc can be measured in vivo showed that, for the sitting position at least, these pressures are rather high-between 17-7 kg. per sq. cm. (252 lb.

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Avoiding excessive intradiscal pressure (Fig. 14.2) a The sitting-forward position: lumbar intradiscal pressure. 4 Jun 2014 The L5 (last low back) disc has the greatest pressure. Pioneering Swedish orthopedic specialist and professor Alf Nachemson, MD, PhD, Based in part on his intradiscal pressure studies, Dr. Nachemson notes that 80% o By measurement of intradiscal pressure in vitro, the hydrostatic properties of the nucleus pulposus of normal lumbar intervertebral disc were proven. 14 Jan 2020 1960's poster adapted from Alf Nachemson's research depicting the intradiscal pressure in the lumbar spine in various postures. The theory  First, Alf Nachemson in the 1960s published ings and Nachemson did not himself propose that the lumbar intradiscal pressure on the tensile stresses in.

LUMBAR DISCOMETRY LUMBAR INTRADISCAL PRESSURE MEASUREMENTS IN VIVO. Alf Nachemson, M.D. Uppsala. Alf Nachemson. Affiliations. Biomechanics Laboratory and Department of Orthopedic Surgery, University of California, San Francisco, United States and Department of Orthopaedic Surgery, University of Gothenburg, Sweden.

Lumbar intradiscal pressure: experimental studies on post-mortem material(1960年) The lumber Spine. An orthopaedic challenge (1976年) 外部リンク [編集] 追悼European Spine Journal; Alf Nachemson Memorial Lecture; The Truth About Back Pain In vivo measurements of intradiscal pressure;: Discometry, a method for the determination of pressure in the lower lumbar disc, ([Technical report]). by Alf Louis  The Valsalva maneuver generally increased the intradiscal pressure, but the results A. Nachemson, J. Morris; Published 1964; Medicine; Journal of Bone and  9 Mar 2007 In many ways, Alf Nachemson helped give birth to the specialty of spine physiologic studies of intradiscal pressure, he became self-taught in  Alf Nachemson, M. D.. From the Department disc pressure measurements, of the load to which the lumbar crease the intradiscal pressures and thus the load . 17 Mar 2017 in 1969 by Marianne Zachrisson-Forsell (1980) and Alf Nachemson.

26 Nov 2016 However, Alf Nachemson, M.D., Ph.D., the Swedish orthopedist who pioneered studies of intradiscal pressure severely criticized the 

Introduction. The hydrostatic pressure of the nucleus pulposus plays a key role in the biomechanical properties of the thoracic spine, reducing compressive stress gradients in the anulus fibrosus (Stefanakis et al., 2014) and affecting the segmental stability more than any ligamentous or bony structure (Wilke et al., 2020).Several investigators explored the characteristics of intradiscal 1994-09-01 Considerations on the later studies on intradiscal pressures. Studies, from Japan, Sato ( Sato et al., 1999 ) , using a piezoresistive sensor in the transducer needle detecting the pressure laterally at a window and not at the needle tip, confirmed the pioneering findings of Nachemson and examining the changes in the more relevant L4/5 disc rather than the L3/4. Nachemson A. Rheumatol Rehabil, 14(3):129-143, 01 Aug 1975 Cited by: 102 articles | PMID: 125914.

vertebral motion, intradiscal pressure, and the pullout force applied to the screws. Once Deyo , Richard A., Alf Nachemson , and Sohail K. Mirza 2004. Use this page to view details for the decision Memo for Thermal Intradiscal Procedures tears, annular denervation and/or decreased intradiscal pressure ( Derby, Baker et al. Schoene M. A Tribute to Alf Nachemson: The Spine Intervi [37] Alf Nachemson.
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4 Jun 2014 The L5 (last low back) disc has the greatest pressure.

Next Article A SIMPLE METHOD OF INTRA-ARTERIAL Nachemson A. (1974) Lumbar intradiscal pressure Results from in vitro and in vivo experiments with some clinical implications. In: Hartmann F. (eds) Biopolymere und Biomechanik von Bindegewebssystemen.
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Study design: We conducted intradiscal pressure measurements with one volunteer performing various activities normally found in daily life, sports, and spinal therapy. Objectives: The goal of this study was to measure intradiscal pressure to complement earlier data from Nachemson with dynamic and long-term measurements over a broad range of activities.

The theory  First, Alf Nachemson in the 1960s published ings and Nachemson did not himself propose that the lumbar intradiscal pressure on the tensile stresses in. This reversal of pressure creates an intradiscal vacuum that helps to reposition A.B. Schultz, Alf Nachemson, MD PhD, Intervertebral Disc Pressures During  compresses the spine, creating negative pressures' Axial Decompression on Intradiscal Pressure, Journal of Neurosurgery, 81(3), 1994. 2. Alf Nachemson,. 31. Juli 1998 wissen wir von Alf Nachemson, einem schwedischen Forscher. Titel New intradiscal pressure measurements in vivo during daily activities  patients are required to undergo surgery (Deyo , Nachemson , and Mirza 2004).