Timothy M Ryan

Summary

Affiliation: Duke University Medical Center
Country: USA

Publications

  1. ncbi request reprint The three-dimensional structure of trabecular bone in the femoral head of strepsirrhine primates
    Timothy M Ryan
    Department of Anthropology, The University of Texas at Austin, Austin, Texas 78712, USA
    J Hum Evol 43:1-26. 2002
  2. ncbi request reprint Femoral head trabecular bone structure in two omomyid primates
    Timothy M Ryan
    Department of Anthropology, The University of Texas at Austin, 78712, USA
    J Hum Evol 43:241-63. 2002
  3. pmc Trabecular bone microstructure scales allometrically in the primate humerus and femur
    Timothy M Ryan
    Department of Anthropology, Pennsylvania State University, University Park, PA 16802, USA
    Proc Biol Sci 280:20130172. 2013
  4. doi request reprint Trabecular bone structure in the humeral and femoral heads of anthropoid primates
    Timothy M Ryan
    Department of Anthropology, Pennsylvania State University, University Park, PA 16802, USA
    Anat Rec (Hoboken) 293:719-29. 2010
  5. doi request reprint Comparative forefoot trabecular bone architecture in extant hominids
    Nicole L Griffin
    Department of Evolutionary Anthropology, Duke University, P O Box 90383 Science Drive Durham, NC, USA
    J Hum Evol 59:202-13. 2010
  6. pmc A remarkable female cranium of the early Oligocene anthropoid Aegyptopithecus zeuxis (Catarrhini, Propliopithecidae)
    Elwyn L Simons
    Department of Biological Anthropology and Anatomy and Duke Lemur Center, Division of Fossil Primates, Duke University, 1013 Broad Street, Durham, NC 27705, USA
    Proc Natl Acad Sci U S A 104:8731-6. 2007
  7. ncbi request reprint Preliminary observations on the calcaneal trabecular microarchitecture of extant large-bodied hominoids
    Murat Maga
    Department of Geological Sciences, Jackson School of Geosciences, University of Texas at Austin, Austin, Texas 78712, USA
    Am J Phys Anthropol 129:410-7. 2006
  8. doi request reprint Development of cortical bone geometry in the human femoral and tibial diaphysis
    James H Gosman
    Department of Anthropology, The Ohio State University, Columbus, OH 43210, USA
    Anat Rec (Hoboken) 296:774-87. 2013
  9. doi request reprint Does skeletal anatomy reflect adaptation to locomotor patterns? Cortical and trabecular architecture in human and nonhuman anthropoids
    Colin N Shaw
    Department of Anthropology, The Pennsylvania State University, University Park, PA 16802, USA
    Am J Phys Anthropol 147:187-200. 2012
  10. pmc Analysis of intraindividual and intraspecific variation in semicircular canal dimensions using high-resolution x-ray computed tomography
    Kelli L Welker
    Department of Anthropology, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
    J Anat 215:444-51. 2009

Detail Information

Publications16

  1. ncbi request reprint The three-dimensional structure of trabecular bone in the femoral head of strepsirrhine primates
    Timothy M Ryan
    Department of Anthropology, The University of Texas at Austin, Austin, Texas 78712, USA
    J Hum Evol 43:1-26. 2002
    ..The differences in femoral head trabecular structure among these taxa seem to be related to locomotor behavioral differences, reflecting variation in the use and loading of the hip joint during normal locomotion...
  2. ncbi request reprint Femoral head trabecular bone structure in two omomyid primates
    Timothy M Ryan
    Department of Anthropology, The University of Texas at Austin, 78712, USA
    J Hum Evol 43:241-63. 2002
    ....
  3. pmc Trabecular bone microstructure scales allometrically in the primate humerus and femur
    Timothy M Ryan
    Department of Anthropology, Pennsylvania State University, University Park, PA 16802, USA
    Proc Biol Sci 280:20130172. 2013
    ....
  4. doi request reprint Trabecular bone structure in the humeral and femoral heads of anthropoid primates
    Timothy M Ryan
    Department of Anthropology, Pennsylvania State University, University Park, PA 16802, USA
    Anat Rec (Hoboken) 293:719-29. 2010
    ..The results indicate broad similarity in trabecular bone structure in these bones across anthropoids...
  5. doi request reprint Comparative forefoot trabecular bone architecture in extant hominids
    Nicole L Griffin
    Department of Evolutionary Anthropology, Duke University, P O Box 90383 Science Drive Durham, NC, USA
    J Hum Evol 59:202-13. 2010
    ..This study provides a potential route for predicting forefoot function and gait in fossil hominins from metatarsal head trabecular bone architecture...
  6. pmc A remarkable female cranium of the early Oligocene anthropoid Aegyptopithecus zeuxis (Catarrhini, Propliopithecidae)
    Elwyn L Simons
    Department of Biological Anthropology and Anatomy and Duke Lemur Center, Division of Fossil Primates, Duke University, 1013 Broad Street, Durham, NC 27705, USA
    Proc Natl Acad Sci U S A 104:8731-6. 2007
    ....
  7. ncbi request reprint Preliminary observations on the calcaneal trabecular microarchitecture of extant large-bodied hominoids
    Murat Maga
    Department of Geological Sciences, Jackson School of Geosciences, University of Texas at Austin, Austin, Texas 78712, USA
    Am J Phys Anthropol 129:410-7. 2006
    ..We also present a new visualization technique that summarizes the trabecular network orientation, and makes it more readily interpretable than the summary statistics of the underlying fabric tensor of the orientation matrix...
  8. doi request reprint Development of cortical bone geometry in the human femoral and tibial diaphysis
    James H Gosman
    Department of Anthropology, The Ohio State University, Columbus, OH 43210, USA
    Anat Rec (Hoboken) 296:774-87. 2013
    ..Two time periods of accelerated change are identified: early childhood and prepuberty/adolescence...
  9. doi request reprint Does skeletal anatomy reflect adaptation to locomotor patterns? Cortical and trabecular architecture in human and nonhuman anthropoids
    Colin N Shaw
    Department of Anthropology, The Pennsylvania State University, University Park, PA 16802, USA
    Am J Phys Anthropol 147:187-200. 2012
    ....
  10. pmc Analysis of intraindividual and intraspecific variation in semicircular canal dimensions using high-resolution x-ray computed tomography
    Kelli L Welker
    Department of Anthropology, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
    J Anat 215:444-51. 2009
    ..Pearson product moment correlation analyses demonstrated that there was no significant correlation between canal size and body mass in this sample...
  11. pmc Additional remains of Wadilemur elegans, a primitive stem galagid from the late Eocene of Egypt
    Erik R Seiffert
    Department of Earth Sciences, University of Oxford, and Oxford University Museum of Natural History, Parks Road, Oxford OX1 3PR, United Kingdom
    Proc Natl Acad Sci U S A 102:11396-401. 2005
    ....
  12. ncbi request reprint Angular orientation of trabecular bone in the femoral head and its relationship to hip joint loads in leaping primates
    Timothy M Ryan
    Department of Anthropology and Center for Quantitative Imaging, Pennsylvania State University, University Park, PA 16802, USA
    J Morphol 265:249-63. 2005
    ..nonleaping taxa. These results further suggest a relationship between bone microstructure in the hip joint and locomotor behavior and indicate a similarity of loading across leapers despite differences in kinematics and phylogeny...
  13. ncbi request reprint Mechanical significance of femoral head trabecular bone structure in Loris and Galago evaluated using micromechanical finite element models
    Timothy M Ryan
    Department of Anthropology and Center for Quantitative Imaging, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
    Am J Phys Anthropol 126:82-96. 2005
    ..The finite element method represents a unique and useful tool for analyzing the functional adaptation of trabecular bone in a diversity of animals and for reconstructing locomotor behavior in extinct taxa...
  14. ncbi request reprint Trabecular bone ontogeny in the human proximal femur
    Timothy M Ryan
    Department of Anthropology and Center for Quantitative Imaging, Pennsylvania State University, University Park, PA 16802, USA
    J Hum Evol 51:591-602. 2006
    ..These results suggest that trabecular structure in the proximal femur reflects the shift in external loading patterns associated with the initiation of unassisted walking in infants...
  15. doi request reprint The primate subarcuate fossa and its relationship to the semicircular canals part II: adult interspecific variation
    Nathan Jeffery
    Department of Human Anatomy and Cell Biology, University of Liverpool, Ashton Street, Liverpool L69 3GE, UK
    J Hum Evol 55:326-39. 2008
    ..The findings show that the most reliable functional signals pertaining to locomotion in species that possess a patent subarcuate fossa are likely to come from the lateral canal and are least likely to come from the anterior canal...
  16. pmc The primate semicircular canal system and locomotion
    Fred Spoor
    Department of Anatomy and Developmental Biology, University College London, Gower Street, London WC1E 6BT, United Kingdom
    Proc Natl Acad Sci U S A 104:10808-12. 2007
    ..Primate and other mammalian species studied here that are agile and have fast, jerky locomotion have significantly larger canals relative to body mass than those that move more cautiously...