Intradiscal pressure together with anthropometric data – a data set for the validation of models

Wilke, Hans–Joachim; Neef, Peter; Hinz, Barbara; Seidel, Helmut; Claes, Lutz

doi:10.1016/s0268-0033(00)00103-0

Cited by 397 publications

(348 citation statements)

References 42 publications

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“…Axial rotation (torsion) was simulated by applying a pure torsional moment with a superimposed follower load of 460 N. Thus, the axial load was the same as for the other loading cases. The calculated intradiscal pressures in L4/ 5 for the intact lumbar spine were close to those measured in vivo for all four loading cases studied [8,15,17].…”

Section: Methodssupporting

confidence: 70%

Comparison of the biomechanical effects of posterior and anterior spine-stabilizing implants

2005

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Section: Methodssupporting

confidence: 70%

Comparison of the biomechanical effects of posterior and anterior spine-stabilizing implants

2005

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“…NZ/wPTs in the compression groups were lower than that in the sham group, while NZ/woPTs in compression groups were greater than that in the sham group studies using the tail model [25], which reported that disc degenerations were induced under continuous compressive stresses of 1 MPa applied for 7-14 days. This magnitude of stress was observed in human lumbar discs in daily activity [32,37,43,44]. Hence, the compressive stress of 0.5 and 1.0 MPa in our experiment was within the physiological level, although the loading period was longer than the physiological one [30].…”

Section: Rationale Of the Experimentssupporting

confidence: 74%

Effects of compressive loading on biomechanical properties of disc and peripheral tissue in a rat tail model

et al. 2009

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Intervertebral disc degeneration induced by mechanical compression is an important issue in spinal disorder research. In this study, the biomechanical aspect of the rat tail model was investigated. An external loading device equipped with super-elastic TiNi springs was developed to apply a precise load to the rat tail. By using this device, rat tail discs were subjected to compressive stress of 0.5 or 1.0 MPa for 2 weeks. Discs in the sham group received an attachment of the device but no loading. After the experimental period, first the intact tail with peripheral tissues (PT) such as tendon and skin and then the retrieved disc without PT were subjected to a uniaxial tension-compression test; biomechanical characteristics such as range of motion (ROM), neutral zone (NZ), and hysteresis loss (HL) were evaluated. Furthermore, the loadbearing contribution of PT in the intact tail was estimated by comparing the load-displacement curves obtained by the mechanical tests performed with and without PT. The experimental findings revealed that the continuous compressive stress induced reduction in disc thickness. The intact tail demonstrated decreases in ROM and NZ as well as increases in HL. On the other hand, the retrieved disc demonstrated increases in ROM, NZ, and HL. Further, a significant increase in the load-bearing contribution of PT was indicated. These findings suggest that the load-bearing capacity of the disc was seriously deteriorated by the application of compressive stress of 0.5 or 1.0 MPa for 2 weeks.

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“…These study findings may be important since a review on risk factors related to back pain at young age indicated that sitting is the most common factor associated with back pain reports in youngsters [1]. Furthermore, at adolescent age youngsters typically adopt stooping postures, which may result in pressure on the anterior aspects of the vertebral growth plates [32]. In addition, the present findings at 2-year followup on lifting aspects, which suggest the implementation of principles in relation to a biomechanical favorable lifestyle, are positive owing to the impact of lifting activities that may increase in youngster's daily life at secondary school age (such as in vocational education).…”

Section: Discussionmentioning

confidence: 77%

“…In the second place, at 13-14 years of age the transition from childhood to adolescence takes place, which is characterized by a biological impact (maturation) and psychosocial implications (psychological development, switch in educational system, exposure to plenty of new interests and influences throughout the peer group). During this transition period, stooping postures are frequently adopted for whatever reason (feelings of shame for the changing body or imitations in conscious of being ''cool''), which may result in pressure on the anterior aspects of the vertebral growth plates [32]. As a final aspect, the mounting back pain reporting around the growth spurt [1] justifies research on the stability of early intervention effects in youngsters at secondary school age.…”

Section: Introductionmentioning

confidence: 99%

Back posture education in elementary schoolchildren: a 2-year follow-up study

et al. 2006

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Within the scope of primary prevention regarding back functioning in children, research on the stability of intervention effects is indispensable. Along this line, the transition from childhood to adolescence is an important phase to evaluate the potential stability of intervention effects because of the typically mechanical and psychological demands related to adolescence. The main aim of the current study was to investigate the effects of a back education program at 2-year follow-up, in youngsters aged 13-14 years, on back posture knowledge, fear-avoidance beliefs and self-reported pain. An additional purpose was to evaluate which aspects of postural behavior were integrated in youngsters' lifestyles. At 2-year followup, the study sample included 94 secondary schoolchildren in the intervention group (mean age 13.3 ± 0.8 years) and 101 controls (mean age 13.2 ± 0.7 years). The back posture program that had been implemented for two school years consisted of back education and the stimulation of postural dynamism in the class through support and environmental changes. A questionnaire was completed comparable to the pretest, posttest and follow-up evaluations. The current study demonstrated at 2-year follow-up stability of the improved general (F = 1.590, ns) and specific (F = 0.049, ns) back posture knowledge in children who had received early back posture education. Back posture education did not result in increased fearavoidance beliefs (F = 1.163, ns) or mounting back and/or neck pain reports (F = 0.001, ns). Based on selfreports for postural behavior, youngsters who had received the back posture program in the elementary school curriculum integrated crucial sitting and lifting principles conform to biomechanical favorable postural behavior. The steady intervention effects 2-year postintervention demonstrated that intensive back posture education through the elementary school curriculum is effective till adolescence. Future research on the impact of early school-based back posture promotion in relation to the integration of back posture principles according to a biomechanical favorable lifestyle and back pain prevalence later in life is essential.

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Intradiscal pressure together with anthropometric data – a data set for the validation of models

Cited by 397 publications

References 42 publications

Comparison of the biomechanical effects of posterior and anterior spine-stabilizing implants

Comparison of the biomechanical effects of posterior and anterior spine-stabilizing implants

Effects of compressive loading on biomechanical properties of disc and peripheral tissue in a rat tail model

Back posture education in elementary schoolchildren: a 2-year follow-up study

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