Journal article
Primary adult human bone cells do not respond to tissue (continuum) level strains
Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association, Vol.6(3), pp.295-301
05/2001
DOI: 10.1007/s007760100051
PMID: 11484127
Abstract
Bone adapts to its mechanical environment, and, since the late 1800s, investigators have presumed that this adaptation relates to strain magnitude. Indeed, overwhelming evidence supports the view that either strain or some strainrelated quantity stimulates bone adaptation or remodeling. Virtually all investigators, implicitly or explicitly, assume that the level of strain magnitude responsible for bone adaptation is that measured by strain gauges in vivo (i.e., 100–2500 microstrain) and that bone cells are directly deformed by strained matrix. We present evidence that bone cell deformation in this range does not cause bone adaptation. First, bone cells in vitro typically do not respond to average (continuum) levels of strain magnitude. Second, bone cells in vitro do respond to fluid flow-induced shear stresses in these ostensible physiological ranges. Third, in vivo strain magnitudes presumed to stimulate remodeling reflect only averages, and not local peaks, which are 2–15 times higher. Thus, we hypothesize that sensing cells do not respond to levels of strain presumed to be physiological.
Details
- Title: Subtitle
- Primary adult human bone cells do not respond to tissue (continuum) level strains
- Creators
- Richard A. Brand - University of IowaClark M. Stanford - University of IowaDaniel P. Nicolella - Southwest Research Institute
- Resource Type
- Journal article
- Publication Details
- Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association, Vol.6(3), pp.295-301
- DOI
- 10.1007/s007760100051
- PMID
- 11484127
- NLM abbreviation
- J Orthop Sci
- ISSN
- 0949-2658
- eISSN
- 1436-2023
- Publisher
- Elsevier B.V
- Language
- English
- Date published
- 05/2001
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Dentistry Administration; Prosthodontics; Orthopedics and Rehabilitation; Craniofacial Anomalies Research Center
- Record Identifier
- 9984367726002771
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