Human Body Properties Database
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AIST Human Body Database > Human Body Properties Database > Passive Joint Properties:MP-Joint of Index Finger

MP-Joint of Index Finger

Esteki-96-01

Author(s)Esteki, A. and Mansour, M.
TitleAn Experimentally Based Nonlinear Viscoelastic Model oh Joint Passive Moment
JournalJ. Biomech.
Vol. & No.Vol.29, No.4 p.443-450
Year1996
Reference(s)Knutson-00-01
Target Joint: MP-Joint of Index Finger
Direction: Flexion-Extension
Characteristic(s): Viscoelasticity
Measurement Condition Subjects: 2 males and 1 female
Age Span: 25-45
Country: USA
Country: USA
Method: Estimation by quasi-static equilibration (type 1-3)
Definition Esteki-96-1 Refer to the figure on the right side.
Expression of the data A non-linear function of moment to the joint angle
Elasticity: an exponential function (unit:Ncm)

Viscosity: a non-linear function (unit:Ncm)


Characteristics
  • The viscous and elastic resistance are measured with the same system. Measuring the elastic/viscous resistance, the finger rotates slowly/quickly with constant velocity.
  • The hysteresis is descripted by above 2 viscous functions.

Knutson-00-01

Author(s)Knutson, J.S., Kilgore, K.L., Mansour, J.M. and Crago, P.E.
TitleIntrinsic and extrinsic contributions to the passive moment at the metacarpophalangeal joint
JournalJ. Biomech.
Vol. & No.Vol.33, No.12 p.1675-1681
Year2000
Reference(s)Esteki-96-01
Target Joint: MP-Joint of Index Finger
Direction: Flextion-Extension
Characteristic(s): Elasticity
Measurement Condition Subjects: 6 males and 2 females
Age Span: 21-39
Country: USA
Method: Estimation by quasi-static equilibration (type 1-3)
Definition Knutson-00-1 Refer to the figure on the right side.
Expression of the data An exponential function of moment to joint angle (unit:Ncm)

Characteristics
  • The same measurement device as Esteki-96-01 is used.
  • The effect of the wrist posture is allowed.
  • The coefficients of the function are measured about all subjects. Those of above function are the average values.