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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]. 301 Moved Permanently. nginx The L5 (last low back) disc has the greatest pressure. In addition, disc pressure changes with changes in bodily positions and activities. Pioneering Swedish orthopedic specialist and professor Alf Nachemson, MD, PhD, [1931-2006] developed a method to measure intradiscal pressures (3).

The theory was to avoid these postures if you had back pain. It was commonly taught in physical therapy schools around the world to warn us of the dangers to our low backs from repeated bending and sitting. 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].

Tommy Hansson Göteborgs universitet

Affiliations. Biomechanics Laboratory and Department of Orthopedic Surgery, University of California, San Francisco, United States and Department of Orthopaedic Surgery, University of Gothenburg, Sweden. Abstract. By measurement of intradiscal pressure in vitro, the hydrostatic properties of the nucleus pulposus of normal lumbar intervertebral disc were proven.

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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. There is not a lot of data on intradiscal pressure (IDP) from (live) human subjects except for Alf Nachemson, Hans-Joachim Wilke, and one other person whose name escapes me. From a computational standpoint, comparisons with IDP should be taken only as a sanity check. Intradiscal Pressure in the Normal and Degenerated Discs.

Biomechanics Laboratory and Department of Orthopedic Surgery, University of California, San Francisco, United States and Department of Orthopaedic Surgery, University of Gothenburg, Sweden. Abstract. By measurement of intradiscal pressure in vitro, the hydrostatic properties of the nucleus pulposus of normal lumbar intervertebral disc were proven.
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The pressure was registered both in the horizontal position and during tilting on a table, during the performance of a standardized exercise program for the upper extremities, as well as during cough, during abdominal strain and while the subjects were being turned from the supine to the lateral position. High intradiscal pressures (ten to fifteen kilograms per square centimeter) were found in the normal discs with the subject in the sitting position.

In addition, disc pressure changes with changes in bodily positions and activities. Pioneering Swedish orthopedic specialist and professor Alf Nachemson, MD, PhD, [1931-2006] developed a method to measure intradiscal pressures (3).
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Tommy Hansson Göteborgs universitet

Scand . However, Alf Nachemson, M.D., Ph.D., the Swedish orthopedist who pioneered studies of intradiscal pressure severely criticized the experimental setup [22].

Lumbar intradiscal pressure - LIBRIS

Intravital dynamic pressure measurements in lumbar discs. A study of common movements, maneuvers by late Alf Nachemson, by inter-discipline migrations. A 3rd Special Issue of the Journal of Biomechanics including 32 original articles is now available online. 15 Sep 2015 (2001) wanted to compare intradiscal pressures and spinal fixator loads Nachemson (1966, 1981) reported 40% higher intradiscal pressure 21 Aug 2010 ABSTRACT. Objective: The goal of this study was to measure intradiscal pressure to complement earlier data from Nachemson with dynamic and LIBRIS titelinformation: Lumbar intradiscal pressure : experimental studies on post-mortem material / Alf Nachemson.

In a prospective study by the Scoliosis Research Society, 286 girls who had adolescent idiopathic scoliosis, a thoracic or thoracolumbar curve of 25 to 35 degrees, and a mean age of twelve years and…. Expand.