Table 2 Finger joints normal range of motion
Finger joint | DOF | Type of motion | Theoretical range | Measured range |
|---|---|---|---|---|
Thumb CMC | 1 | Hyperextension/Flexion | -10/55 deg | 9.86±21.17/50.06±11.39 deg |
Thumb MCP | 2 | Hyperextension/Flexion | -10/55 deg | -3.05±4.94/56.51± 8.34 deg |
Thumb IP | 3 | Hyperextension/Flexion | -15/80 deg | -4.52±8.40/57.27±18.01 deg |
Index MCP | 4 | Extension/Flexion | -45/90 deg | -39.97±15.00/62.29±14.27 deg |
Index PIP | 5 | Extension/Flexion | 0/100 deg | -14.95±12.42/72.55±16.87 deg |
Index DIP | 6 | Extension/Flexion | 0/80 deg | -16.96±13.97/45.51±22.25 deg |
Middle MCP | 7 | Extension/Flexion | -45/90 deg | -34.07±10.29/69.39±11.61 deg |
Middle PIP | 8 | Extension/Flexion | 0/100 deg | -16.87±12.88/80.07±16.52 deg |
Middle DIP | 9 | Extension/Flexion | 0/80 deg | -15.15±11.77/57.07±22.42 deg |
Ring MCP | 10 | Extension/Flexion | -45/90 deg | -26.35±10.71/62.51±11.04 deg |
Ring PIP | 11 | Extension/Flexion | 0/100 deg | -15.34±11.44/88.58±14.21 deg |
Ring DIP | 12 | Extension/Flexion | 0/80 deg | -14.52±11.36/58.94±19.99 deg |
Little MCP | 13 | Extension/Flexion | -45/90 deg | -14.31±12.59/69.27± 6.07 deg |
Little PIP | 14 | Extension/Flexion | 0/100 deg | -14.66±12.59/72.94±14.27 deg |
Little DIP | 15 | Extension/Flexion | 0/80 deg | -10.09±8.45/84.54±12.60 deg |