1 Lee K S. Estimation of the incidence of head injury in Korea: an approximation based on national traffic accident statistics. J Korean Med Sci, 2001, 16: 342–346
[2]
2 Rosenfeld J V, McDermott F T, Laidlaw J D, et al. The preventability of death in road traffic fatalities with head injury in Victoria, Australia. J Clin Neurosci, 2000, 7: 507–514？？
[3]
3 May P R, Fuster J M, Haber J, et al. Woodpecker drilling behavior--an endorsement of the rotational theory of impact brain injury. Arch Neurol-Chicago, 1979, 36: 370–373？？
[4]
4 Darwin C. The Origin of Species by Means of Natural Selection. 6th ed. London: Senate, 1872
[5]
5 Sielmann H. My Year with the Woodpeckers. London: Barrier and Rockliff, 1959. 139
[6]
6 Gibson L J. Woodpecker pecking: how woodpeckers avoid brain injury. J Zool, 2006, 270: 462–465？？
[7]
7 Oda J, Sakamoto J, Sakano K. Mechanical evaluation of the skeletal structure and tissue of the woodpecker and its shock absorbing system. JSME Int J Ser A, 2006, 49: 390–396？？
[8]
8 May P R, Fuster J M, Newman P, et al. Woodpeckers and head injury. Lancet, 1976, 1: 454–455
[9]
9 Wang L, Cheung J T, Pu F, et al. Why do woodpeckers resist head impact injury: a biomechanical investigation. PLoS ONE, 2011, 6: e26490？？
11 Bock W J. An Approach to the funcitional analysis of bill shape. Auk, 1966, 83: 10–51
[12]
12 Degrange F J, Tambussi C P, Moreno K, et al. Mechanical analysis of feeding behavior in the extinct “terror bird” Andalgalornis steulleti (Gruiformes: Phorusrhacidae). PLoS ONE, 2010, 5: e11856？？
[13]
13 Herrel A, Podos J, Huber S K, et al. Evolution of bite force in Darwin''s finches: a key role for head width. J Evol Biol, 2005, 18: 669–675？？
[14]
14 Carter D R, Fyhrie D P, Whalen R T. Trabecular bone density and loading history: Regulation of connective tissue biology by mechanical energy. J Biomech, 1987, 20: 785–794？？
[15]
15 Cowin S C. Wollff''s law of trabecular bone architecture at remodeling equilibrium. J Biomech Eng, 1986, 108: 83–88？？
[16]
16 Lanyon L E. Using functional loading to influence bone mass and architecture: objectives, mechanisms, and relationship with estrogen of the mechanically adaptive process in bone. Bone, 1996, 18: S37–S43？？
[17]
17 Roesler H. The history of some fundamental concepts in bone biomechanics. J Biomech, 1987, 20: 1025–1034？？
[18]
18 Ruimerman R, Huiskes R, Van Lenthe G H, et al. A computer-simulation model relating bone-cell metabolism to mechanical adaptation of trabecular architecture. Comput Method Biomec, 2001, 4: 433–448？？
[19]
19 Linde F, Gothgen C B, Hvid I, et al. Mechanical properties of trabecular bone by a nondestructive compression testing approach. Eng Med,1988, 17: 23–29？？
[20]
20 Van Eijden T M G J, Giesen E B W, Ding M, et al. Mechanical properties of cancellous bone in the human mandibular condyle are anisotropic. J Biomech, 2001, 34: 799–803？？
[21]
21 Kandori K, Horigami N, Yasukawa A, et al. Texture and formation mechanism of fibrous calcium hydroxyapatite particles prepared by decomposition of calcium-edta chelates. J Am Ceram Soc, 1997, 80: 1157–1164
[22]
22 Koutsopoulos S. Synthesis and characterization of hydroxyapatite crystals: A review study on the analytical methods. J Biomed Mater Res,2002, 62: 600–612？？
[23]
23 Wolff J. The classic: on the significance of the architecture of the spongy substance for the question of bone growth: a preliminary publication. Clin Orthop Relat R, 2011, 469: 3077–3078？？
[24]
24 Wolff J. The classic on the inner architecture of bones and its importance for bone growth. Clin Orthop Relat R, 2010, 468: 1056–1065？？
[25]
25 Liu X S, Sajda P, Saha P K, et al. Complete volumetric decomposition of individual trabecular plates and rods and its morphological correlations with anisotropic elastic moduli in human trabecular bone. J Bone Miner Res, 2008, 23: 223–235
[26]
26 Müller R. Hierarchical microimaging of bone structure and function. Nature Review Rheumatol, 2009, 5: 373–381？？
[27]
27 Ulrich D, Van Rietbergen B, Laib A, et al. The ability of three-dimensional structural indices to reflect mechanical aspects of trabecular bone. Bone, 1999, 25: 55–60？？
[28]
28 Ding M, Hvid I. Quantification of age-related changes in the structure model type and trabecular thickness of human tibial cancellous bone. Bone, 2000, 26: 291–295？？
