Table 3.

Values of infrared thermography before and 6 weeks after carpal tunnel release

Parameter	Before CTRa	6 weeks after CTR	p-value
Skin temperature of measured area
1st digit, °C	28.80 ± 1.38	28.30 ± 1.62	0.082
2nd digit, °C	28.14 ± 1.16	27.83 ± 1.54	0.250
3rd digit, °C	28.06 ± 1.41	27.73 ± 1.76	0.214
5th digit, °C	27.65 ± 1.74	27.26 ± 2.04	0.171
Thenar, °C	29.89 ± 1.09	30.40 ± 2.18	0.228
Hypothenar, °C	29.88 ± 1.26	29.84 ± 1.21	0.821
Processed parameter
ΔM − U digitsb, °C	0.68 ± 0.95	0.69 ± 0.95	0.946
Δthenar−hypothenarc, °C	0.01 ± 0.82	0.57 ± 1.67	0.125
ΔM − U territoriesd, °C	0.69 ± 1.48	1.26 ± 2.12	0.157
Anisometrye, °C	2.55 ± 0.96	1.64 ± 1.34	0.003*
│digit 1 − digit 2│	0.93 ± 0.49	0.60 ± 0.54	0.011*
│digit 1 − digit 3│	1.12 ± 0.52	0.73 ± 0.73	0.028*
│digit 2 − digit 3│	0.50 ± 0.34	0.32 ± 0.33	0.012*

Table showing mean and standard deviation

^aCTR, carpal tunnel release; ^b ΔM-U digits, temperature difference between the median and ulnar nerve digits; ^c Δthenar-hypothenar, temperature difference between the thenar and hypothenar areas; ^d ΔM-U territories, temperature difference between the median and ulnar nerve territories; ^e Anisometry, anisometry of the median nerve-innervated digits

* P < 0.05