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-

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

Affiliations. Biomechanics Laboratory and Department of Orthopedic Surgery, University of California, San Francisco, United States and Department of Orthopaedic Surgery, University of Gothenburg, Sweden. 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.

301 Moved Permanently. nginx Intradiscal Pressure in the Normal and Degenerated Discs. Early efforts of measurement of disc pressure began in the 1960s. Nachemson and Morris were the first to assess intradiscal pressure.

Intradiscal pressure together with anthropometric data--a data set for the validation of models. Wilke H, Neef P, Hinz B, Seidel H, Claes L. Clin Biomech (Bristol, Avon) Nachemson, A. and Morris, J.M. (1964) In Vivo Measurements of Intradiscal Pressure.

Alf Nachemson illustrated the amount of pressure exerted on the spinal discs in standing, sitting and carrying as opposed to lying. As you can see in the chart below, as soon as we go from lying to standing, the pressure on the discs is 400 percent higher and continues to increase in bending and sitting.

Intravital Dynamic Pressure Measurements in Lumbar Discs: A Study of Common Movements, Maneuvers and Exercises. Issue 1 of Scandinavian journal of rehabilitation medicine: Supplement, ISSN 0346-8720.

Intradiscal Pressure (m mHg) 0 75 47-25 55-39 58-43 69-66 4 F 41 Traction tension (l bs) Intradiscal Pressure (m mHg) 0 60 20 30 40-76 55-110 60-126 63-117 65-160 70-106 5 M 34 Traction tension (l bs) Intradiscal Pressure (m mHg) 0 62 50-106 90-138 94-134 98-157 Table 1. Effect of lumbar traction on intradiscal pressure. Measurements in the

Early efforts of measurement of disc pressure began in the 1960s. Nachemson and Morris were the first to assess intradiscal pressure. 3 In 1965, Nachemson observed that the pressure in the AF and NP were different and that disc degeneration could alter the pressure. 4 They measured in vivo loading of the spine during different postures 2016-11-26 · However, Alf Nachemson, M.D., Ph.D., the Swedish orthopedist who pioneered studies of intradiscal pressure severely criticized the experimental setup [22]. In the early 1980s, Nachemson and two colleagues found that during active traction, intradiscal pressure actually rises when the back muscles contract to resist the traction [23].

12, 185 (1963). Google Scholar 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. We conducted intradiscal pressure mea-surements with one volunteer performing various activities normally found in daily life, sports, and spinal therapy. Objectives.
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A. Nachemson, L. Peterson. Medicine. The Journal of bone and joint surgery. American…. 1 June 1995.

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Alf Thorstensson. Cenh-um för monary flow-volume and pressure-flow re- lationship during 6: 32-35,1977. Nachemson A. Lumbar intradiscal pressure:.

3 In 1965, Nachemson observed that the pressure in the AF and NP were different and that disc degeneration could alter the pressure. 4 They measured in vivo loading of the spine during different postures Intradiscal pressure under axial compression Axial compression exhibited a strong decrease in the intradiscal pressure from the upper cervical to the upper lumbar region, from where the pressure remained almost constant towards the sacrum (Fig. 3).

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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

Measurements in the 2016-11-26 In vivo measurements of intradiscal pressure;: Discometry, a method for the determination of pressure in the lower lumbar disc, ([Technical report]) [Nachemson, Alf Louis] on Amazon.com. *FREE* shipping on qualifying offers.