Fig 1.
Indentation angles, (A) 0° extension for wrist in neutral position, (B) 45° extension and (C) 65° extension.
Fig 2.
Palmar location tested during the indentation trials (red dot).
The dark gray zone represents the danger zone where highest force occurs during a fall [10].
Fig 3.
Schematic view of trapeziometacarpal joint anatomy.
Fig 4.
Representative force-displacement curves for one subject at low (A) and high (B) frequencies show marked hysteresis in the unloading responses.
Fig 5.
Force displacement curves for subjects and angles at low and high frequency normalized to peak displacement show high inter-subject variability.
Table 1.
Average of stiffness at small deformation (S.D.) and large deformation (L.D.) for males, females, and all participants.
Fig 6.
Average of peak force (N) and energy absorbed (10-3J) at 31% soft tissue compression for male and female for all positions and both frequencies.
Fig 7.
Average of peak force at different angles for high and low frequency grouped by tissue thickness (group 1 < 2.5 mm, 2.5 mm < group 2 <3.0 mm and group 3 > 3.0 mm).
Fig 8.
Average of energy absorbed on different angles regarding various tissue thicknesses.