Table 1. Pulleys thickness for all pulleys in thumbs measured by US, in both HC and cadavers, and by digital calliper, in cadavers.

	Ultrasound		Digital calliper
	HC	Cadavers	Cadavers
A1, mean (SD), mm	0.242 (0.058)	0.284* (0.078)	0.273 (0.076)
Av, mean (SD), mm	0.178 (0.079)	0.242* (0.051)	0.244 (0.051)
Obl, mean (SD), mm	0.204 (0.047)	0.241* (0.053)	0.251 (0.068)
A2, mean (SD), mm	0.125 (0.042)	0.127 (0.046)	0.103 (0.029)

Quantitative data are expressed in mean and SD.

^*p<0.05, statistically significant thicker pulleys in cadavers versus HC.

HC, healthy control; US, ultrasound.