The aim of this work was to create an anatomically accurate three-dimensional finite element model of the wrist, applying subject-specific loading and quantifying the internal load transfer through the joint during maximal grip. For three subjects, representing the anatomical variation at the wrist, loading on each digit was measured during a maximal grip strength test with simultaneous motion capture. The internal metacarpophalangeal joint load was calculated using a biomechanical model. High-resolution magnetic resonance scans were acquired to quantify bone geometry. Finite element analysis was performed, with ligaments and tendons added, to calculate the internal load distribution. It was found that for the maximal grip the thumb carried the highest load, an average of 72.2 ± 20.1 N in the neutral position. Results from the finite element model suggested that the highest regions of stress were located at the radial aspect of the carpus. Most of the load was transmitted through the radius, 87.5 per cent, as opposed to 12.5 per cent through the ulna with the wrist in a neutral position. A fully three-dimensional finite element analysis of the wrist using subject-specific anatomy and loading conditions was performed. The study emphasizes the importance of modelling a large ensemble of subjects in order to capture the spectrum of the load transfer through the wrist due to anatomical variation.
McGroutherD. A.O'HigginsP.Interactive hand v. 1.0, CD-ROM (Primal Pictures1997)
2.
PalmerA. K.WernerF. W.‘Biomechanics of the distal radioulnar joint.’Clin. Orthop. Related. Res.187 (1984): 26–35
3.
ViegasS. F.TencerA. F.CantrellJ.ChangM.CleggP.HicksC.O'MearaC.WilliamsonJ. B.‘Load transfer characteristics of the wrist. Part I. The normal joint.’J. Hand Surg. Am.12 (6) (1987): 971–978
4.
ViegasS. F.TencerA. F.CantrellJ.ChangM.CleggP.HicksC.O'MearaC.WilliamsonJ. B.‘Load transfer characteristics of the wrist. Part II. Perilunate instability.’J. Hand Surg. Am.12 (6) (1987): 978–985
5.
TencerA. F.ViegasS. F.CantrellJ.ChangM.CleggP.HicksC.O'MearaC.WilliamsonJ. B.‘Pressure distribution in the wrist joint.’J. Orthop. Res.6 (4) (1988): 509–517
6.
SchuindF.CooneyW. P.LinscheidR. L.AnK. N.ChaoE. Y. S.‘Force and pressure transmission through the normal wrist: A theoretical two-dimensional study in the posteroanterior plane.’J. Biomechanics28 (5) (1995): 587–601
7.
NedomaJ.KlézlZ.FousekJ.KestřánekZ.StehlíkJ.‘Numerical simulation of some biomechanical problems.’Math. Computers Simulation61 (2003): 283–295
8.
CarriganS. D.WhitesideR. A.PichoraD. R.SmallC. F.‘Development of a three dimensional finite element model for carpal load transmission in a static neutral posture.’Ann. Biomed. Engng31 (2003): 718–725
9.
CraigenM. A. C.StanleyJ. K.‘Wrist kinematics: Row, column or both.’J. Hand Surg. Eur.20 (2) (1995): 165–170
10.
FowlerN. K.NicolA. C.‘Interphalangeal joint and tendon forces: Normal model and biomechanical consequences of surgical reconstruction.’J. Biomechanics33 (2000): 1055–1062
11.
FowlerN. K.NicolA. C.‘Functional and biomechanical assessment of the normal and rheumatoid hand.’Clin. Biomechanics16 (8) (2001): 660–666
12.
RabaiG.VadJ.‘Validation of a computational fluid dynamics method to be applied to linear cascades of twisted-swept blades.’Periodica Polytechnica, Ser. Mech. Engng49 (2) (2005): 163–180
13.
VicecontiM.BellingeriL.CristofoliniL.ToniA.‘A comparative study on different methods of automatic mesh generation of human femurs.’Med. Engng Physics20 (1998): 1–10
14.
RhoJ. Y.TsuiT. Y.PharrG. M.‘Elastic properties of human cortical and trabecular lamellar bone measured by nanoindentation.’Biomaterials18 (20) (1997): 1325–1330
15.
KabelJ.OdaardA.van RietbergenB.HuiskesR.‘Connectivity and the elastic properties of cancellous bone.’Bone24 (2) (1999): 115–120
16.
MorganE. F.BayraktarH. H.KeavenyT. M.‘Trabecular bone modulus—density relationships depend on anatomic site.’J. Biomechanics36 (2003): 897–904
17.
BergerR. A.‘The ligaments of the wrist: A current overview of anatomy with considerations of their potential functions.’Hand Clin.13 (1997): 63–82
18.
BergerR. A.ImeadaT.BerglundL.AnK. N.‘Constraint and material properties of the subregions of the scapholunate interosseous ligament.’J. Hand Surg. Am.24 (5) (1999): 953–962
19.
BettingerP. C.LinscheidR. L.BergerR. A.CooneyW. P.AnK. N.‘An anatomic study of the stabilizing ligaments of the trapezium and trapeziometacarpal joint.’J. Hand Surg. Am.24 (4) (1999): 786–798
20.
BettingerP. C.SmutzW. P.LinscheidR. L.CooneyW. P.AnK. N.‘Material properties of the trapezial and trapeziometacarpal ligaments.’J. Hand Surg. Am.25 (2000): 1085–1095
21.
CuénodP.CharriéreE.PapaloïzosM. Y.‘A mechanical comparison of bone—ligament—bone autografts from the wrist for replacement of the scapholunate ligament.’J. Hand Surg. Am.27 (2002): 985–990
22.
HarveyE.HanelD.‘Bone—ligament—bone reconstruction for scapholunate disruption.’Technqs Hand Upper Extremity Surg.6 (1) (2002): 2–5
23.
HarveyE. J.HanelD.KnightJ. B.TencerA. F.‘Autograft replacements for the scapholunate ligament: A biomechanical comparison of hand-based autografts.’J. Hand Surg. Am.24 (5) (1999): 963–967
24.
HofstedeD. J.RittM. J.BosK. E.‘Tarsal autografts for reconstruction of the scapholunate interosseous ligament: A biomechanical study.’J. Hand Surg. Am.24 (5) (1999): 968–976
25.
JohnstonJ. D.SmallC. F.BouxseinM. L.PichoraD. R.‘Mechanical properties of the scapholunate ligament correlate with bone mineral density measurements of the hand.’J. Orthop. Res.22 (2004): 867–871
26.
LoganS. E.NowakM. D.‘Distinguishing biomechanical properties and intrinsic and extrinsic human wrist ligaments.’Trans. ASME, J. Biomech. Engng113 (1) (1991): 85–93
27.
LutzM.HaidC.SteinlechnerM.KathreinA.AroraR.Fritz1D.GablM.PechlanerS.‘Scapholunate ligament reconstruction using a periosteal flap of the iliac crest: A biomechanical study.’Arch. Orthop. Trauma Surg.124 (4) (2004): 262–266
28.
RittM. J.BergerR. A.BishopA. T.AnK. N.‘The capitohamate ligaments. A comparison of biomechanical properties.’J. Hand Surg. Eur.21 (4) (1996): 451–454
29.
SvobodaS. J.EglsederW. A.BelkoffS. M.‘Autografts from the foot for reconstruction of the scapholunate interosseous ligament.’J. Hand Surg. Am.20 (6) (1995): 980–985
30.
ShinS. S.MooreD. C.McGovernR. D.WeissA. P.‘Scapholunate ligament reconstruction using a bone—retinaculum—bone autograft: A biomechanic and histologic study.’J. Hand Surg. Am.23 (2) (1998): 216–221
31.
BergerR. A.Garcia-EliasM.‘General anatomy of the wrist.’ In Biomechanics of the wrist joint1991, pp. 1–22 (Springer-Verlag, New York).
32.
HoriiE.AnK. N.LinscheidR. L.‘Excursion of prime wrist tendons.’J. Hand Surg. Am.18 (1993): 83–90
33.
DeakinA. H.The mechanical and morphological properties of normal and rheumatoid human forearm tendons PhD Thesis, University of Strathclyde, 2006.
34.
MacleodN. A.NashD. H.StansfieldB. W.Bransby-ZacharyM.HemsT.‘Cadaveric analysis of the wrist and forearm load distribution for finite element validation.’ In Proceedings of the Sixth International Hand and Wrist Biomechanics Symposium, Tainan, Republic of China, 2007, p. 11 (National Cheng Kung University, Tainan).
35.
UlrichD.van RietbergenB.LaibA.RuegseggerP.‘Load transfer analysis of the distal radius from in-vivo high resolution CT-imaging.’J. Biomechanics32 (1999): 821–828
36.
BosisioM.TalmantM.SkalliW.LaugierP.MittonD.‘Apparent Young's modulus of human radius using inverse finite-element method.’J. Biomechanics40 (2007): 2022–2028
37.
KerinA. J.WisnomM. R.AdamsM. A.‘The compressive strength of articular cartilage.’Proc. IMechE, Part H: J. Engineering in Medicine212 (4) (1998): 273–280 DOI: 10.1243/0954411981534051.
38.
Garcia-EliasM.‘Kinetic analysis of carpal stability during grip.’Hand Clin.13 (1) (1997): 151–158
