Abstract：
:Spine musculoskeletal models used to estimate loads and displacements require many simplifying assumptions. We examined how assumptions about subject size and vertebral positions can affect the model outcomes. Head and neck models were developed to represent 30 subjects (15 males and 15 females) in neutral posture and in forward head postures adopted while using tablet computers. We examined the effects of (1) subject size-specific parameters for head mass and muscle strength; and (2) vertebral positions obtained either directly from X-ray or estimated from photographs. The outcome metrics were maximum neck extensor muscle moment, gravitational moment of the head, and gravitational demand, the ratio between gravitational moment and maximum muscle moment. The estimates of maximum muscle moment, gravitational moment and gravitational demand were significantly different when models included subject-specific vertebral positions. Outcome metrics of models that included subject-specific head and neck size were not significantly different from generic models on average, but they had significant sex differences. This work suggests that developing models from X-rays rather than photographs has a large effect on model predictions. Moreover, size-specific model parameters may be important to evaluate sex differences in neck musculoskeletal disorders.
journal_name
Ann Biomed Engjournal_title
Annals of biomedical engineeringauthors
Vasavada AN,Hughes E,Nevins DD,Monda SM,Lin DCdoi
10.1007/s10439-018-2084-9subject
Has Abstractpub_date
2018-11-01 00:00:00pages
1844-1856issue
11eissn
0090-6964issn
1573-9686pii
10.1007/s10439-018-2084-9journal_volume
46pub_type
临床试验,杂志文章abstract：:Numerous head injury models exist that vary in mesh density by orders of magnitude. A careful study of the mesh convergence behavior is necessary, especially in terms of strain most relevant to brain injury. To this end, as well as to investigate the effect of element integration scheme on simulated strains, we re-mes...
journal_title：Annals of biomedical engineering
pub_type： 杂志文章
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更新日期：2019-02-01 00:00:00
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journal_title：Annals of biomedical engineering
pub_type： 杂志文章
doi：10.1007/BF02368042
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journal_title：Annals of biomedical engineering
pub_type： 杂志文章
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更新日期：2018-12-01 00:00:00
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journal_title：Annals of biomedical engineering
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journal_title：Annals of biomedical engineering
pub_type： 杂志文章,随机对照试验
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pub_type： 杂志文章
doi：10.1114/1.178
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journal_title：Annals of biomedical engineering
pub_type： 杂志文章
doi：10.1007/s10439-015-1543-9
更新日期：2016-08-01 00:00:00
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journal_title：Annals of biomedical engineering
pub_type： 杂志文章
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journal_title：Annals of biomedical engineering
pub_type： 杂志文章
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pub_type： 杂志文章
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更新日期：2009-06-01 00:00:00
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journal_title：Annals of biomedical engineering
pub_type： 杂志文章
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更新日期：2011-09-01 00:00:00
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journal_title：Annals of biomedical engineering
pub_type： 杂志文章
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journal_title：Annals of biomedical engineering
pub_type： 杂志文章
doi：10.1007/s10439-011-0369-3
更新日期：2011-11-01 00:00:00
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pub_type： 杂志文章
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更新日期：1996-03-01 00:00:00
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journal_title：Annals of biomedical engineering
pub_type： 杂志文章
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更新日期：2011-06-01 00:00:00
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journal_title：Annals of biomedical engineering
pub_type： 杂志文章
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journal_title：Annals of biomedical engineering
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更新日期：2011-04-01 00:00:00
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