 Method Twenty-three healthy participants were included in this randomized, two-observer, test-retest study. The volunteers were blinded to the test-results. The design was adjusted to examine intra-inter-observer and intra-inter-day variability in SHAs after a first degree burn injury was induced by a contact thermode 47oC, 7 minutes, thermode area 12.5 cm2 on the lower leg. The SHAs were assessed 45 to 75 min 15 min for each observer after the burn injury and delineated by 3 different polyamide monofilaments 50, 299, 986 mN and a weighted-pin instrument 512 mN. The testing order of the monofilaments was randomized, and the observers were blinded to the study results of each other. The examination order of the observers on Day 1 was reversed on Day 2 6 weeks later. 