Table 2.

Differences in pressure pain thresholds (PPT) over median, ulnar, and radial nerves between patients with thumb carpometacarpal osteoarthritis and healthy controls

	Median nerve*	Ulnar nerve*, #	Radial nerve*
Patients with thumb carpometacarpal osteoarthritis (CMC OA)
Symptomatic side	252.2 ± 109.8 (95 % CI 193.8–310.5)	329.3 ± 85.1 (95 % CI 283.8–374.8)	295.7 ± 91.0 (95 % CI 247.2–344.2)
Non-symptomatic side	238.3 ± 68.2 (95 % CI 201.8–274.9)	255.2 ± 117.7 (95 % CI 192.9–318.5)	318.5 ± 132.5 (95 % CI 247.2–388.7)
Healthy controls
Dominant side	399.6 ± 85.1 (95 % CI 354.1–445.0)	423.3 ± 119.7 (95 % CI 359.0–486.6)	441.1 ± 92.0 (95 % CI 392.6–490.5)
Non-dominant side	391.6 ± 99.9 (95 % CI 338.2–445.0)	381.8 ± 112.7 (95 % CI 321.4–441.1)	468.8 ± 114.7 (95 % CI 407.5–530.1)

Values (kilopascal) are expressed as mean ± standard deviation (95 % CI)

*P < 0.001 (significant differences between groups, two-way ANOVA test)

^# P = 0.039 (significant differences between sides, two-way ANOVA test)