A validated method for modeling anthropoid hip abductionin silico
| Autor: | Carol V. Ward, J. Michael Plavcan, Ashley S. Hammond |
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| Rok vydání: | 2016 |
| Předmět: |
Male
Primates musculoskeletal diseases 0106 biological sciences medicine.medical_specialty Computer science In silico 010603 evolutionary biology 01 natural sciences Anthropology Physical Model validation Live animal Physical medicine and rehabilitation Joint mobility Functional abilities medicine Animals Computer Simulation 0601 history and archaeology Range of Motion Articular 060101 anthropology Fossils Reproducibility of Results 06 humanities and the arts Anatomy Hip abduction Phys anthropol Large sample body regions Anthropology Female Hip Joint Locomotion |
| Zdroj: | American Journal of Physical Anthropology. 160:529-548 |
| ISSN: | 1096-8644 0002-9483 |
| Popis: | Objectives The ability to reconstruct hip joint mobility from femora and pelves could provide insight into the locomotion and paleobiology of fossil primates. This study presents a method for modeling hip abduction in anthropoids validated with in vivo data. Methods Hip abduction simulations were performed on a large sample of anthropoids. The modeling approach integrates three-dimensional (3D) polygonal models created from laser surface scans of bones, 3D landmark data, and shape analysis software to digitally articulate and manipulate the hip joint. Range of femoral abduction (degrees) and the abducted knee position (distance spanned at the knee during abduction) were compared with published live animal data. Results The models accurately estimate knee position and (to a lesser extent) angular abduction across broad locomotor groups. They tend to underestimate abduction for acrobatic or suspensory taxa, but overestimate it in more stereotyped taxa. Correspondence between in vivo and in silico data varies at the specific and generic level. Conclusions Our models broadly correspond to in vivo data on hip abduction, although the relationship between the models and live animal data is less straightforward than hypothesized. The models can predict acrobatic or stereotyped locomotor adaptation for taxa with values near the extremes of the range of abduction ability. Our findings underscore the difficulties associated with modeling complex systems and the importance of validating in silico models. They suggest that models of joint mobility can offer additional insight into the functional abilities of extinct primates when done in consideration of how joints move and function in vivo. Am J Phys Anthropol, 2016. © 2016 Wiley Periodicals, Inc. |
| Databáze: | OpenAIRE |
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