ELIZA

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324223 occurrences (No.64 in the rank) during 5 years in the PubMed. [no cache] 500 found

316) Bilateral locations of peak stress within C3's pars interarticularis were identified along with the centroids of contact force on the inferior facets.

--- ABSTRACT ---

PMID:23947529 DOI:10.1080/10255842.2013.820717

2015 Computer methods in biomechanics and biomedical engineering

* A finite element evaluation of the moment arm hypothesis for altered vertebral shear failure force.

- The mechanism of vertebral shear failure is likely a bending moment generated about the pars interarticularis by facet contact, and the moment arm length (MAL) between the centroid of facet contact and the location of pars interarticularis failure has been hypothesised to be an influential modulator of shear failure force. To quantitatively evaluate this hypothesis, anterior shear of C3 over C4 was simulated in a finite element model of the porcine C3-C4 vertebral joint with each combination of five compressive force magnitudes (0-60% of estimated compressive failure force) and three postures (flexed, neutral and extended). Bilateral locations of peak stress within C3's pars interarticularis were identified along with the centroids of contact force on the inferior facets. These measurements were used to calculate the MAL of facet contact force. Changes in MAL were also related to shear failure forces measured from similar in vitro tests. Flexed and extended vertebral postures respectively increased and decreased the MAL by 6.6% and 4.8%. The MAL decreased by only 2.6% from the smallest to the largest compressive force. Furthermore, altered MAL explained 70% of the variance in measured shear failure force from comparable in vitro testing with larger MALs being associated with lower shear failure forces. Our results confirmed that the MAL is indeed a significant modulator of vertebral shear failure force. Considering spine flexion is necessary when assessing low-back shear injury potential because of the association between altered facet articulation and lower vertebral shear failure tolerance.

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--- WordNet output for identified --- =>確認飛行物体;略:IFO Overview of verb identify The verb identify has 6 senses (first 6 from tagged texts) 1. (32) identify, place -- (recognize as being; establish the identity of someone or something; "She identified the man on the 'wanted' poster") 2. (7) name, identify -- (give the name or identifying characteristics of; refer to by name or some other identifying characteristic property; "Many senators were named in connection with the scandal"; "The almanac identifies the auspicious months") 3. (6) identify -- (consider (oneself) as similar to somebody else; "He identified with the refugees") 4. (4) identify -- (conceive of as united or associated; "Sex activity is closely identified with the hypothalamus") 5. (2) identify, discover, key, key out, distinguish, describe, name -- (identify as in botany or biology, for example) 6. (2) identify -- (consider to be equal or the same; "He identified his brother as one of the fugitives") Overview of adj identified The adj identified has 1 sense (first 1 from tagged texts) 1. (1) identified -- (having the identity known or established; "the identified bodies were released for burial") --- WordNet end ---