Fig. 1From: Osteochondrosis, but not lameness, is more frequent among free-range pigs than confined herd-matesPrevalence of free-range and confined pigs with a gait remark at 18 and 26 weeks of age. The four scores on the x-axis are 0 normal gait, 1 irregular gait, 2 mild–moderately lame, 3 severely lame. There were no statistically significant differences between the two housing groups in the prevalence of pigs with a gait remark (score >0) at either sample timeBack to article page