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Table 5 Mean values and SDs for the self-report disability questionnaire, performance tests and neuromuscular recordings for the healthy, hand OA and hand RA groups

From: Sensory nerve action potentials and sensory perception in women with arthritis of the hand

Variable

Healthy group

n = 9

Hand OA group

n = 11

Hand RA group

n = 7

AIMS-2 hand/finger function

NA

2.2 ± 1.9

3.5 ± 3.0

Tripod pinch (kg)

7.0 ± 1.4

6.0 ± 2.0

5.8 ± 3.1

Grip strength (kg)

27.7 ± 5.0

24.1 ± 6.8

21.1 ± 10.0

Small dexterity time (s)

38.9 ± 5.3

42.5 ± 5.5

52.8 ± 16.4*

Large dexterity time (s)

26.5 ± 4.1

31.4 ± 4.6

33.2 ± 6.9*

CMAP1 Latency (ms)

4.4 ± 0.8

4.1 ± 0.8

4.3 ± 0.6

CMAP1Amplitude (mV)

13.6 ± 5.3

12.6 ± 5.8

11.5 ± 4.7

CMAP2 Latency (ms)

8.5 ± 0.9

8.2 ± 0.9

8.5 ± 1.1

CMAP2 Amplitude (mV)

13.7 ± 5.8

14.5 ± 4.9

10.0 ± 4.2

CMAP CV (m/s)

57.0 ± 4.8

56.8 ± 5.3

59.5 ± 13.6

  1. *significantly slower compared with the healthy group (p < 0.05).