An article with heat-treatable thermoplastic yarn includes various features. The article may include knit structures that at least partially affect rigidity in a zone that includes thermoplastic yarn. In addition, the article may include knit structures that at least partially affect elasticity in a zone that that includes thermoplastic yarn.

A therapeutic medical device comprising a knitted garment having a knitted anti-slip portion, said knitted anti-slip portion including a repeating pattern of arranged knitted yarns, the repeating pattern having a first low friction yarn comprising a 1/70/34 S twist S twist yarn, a first high friction yarn comprising 200 dtex silicone yarn, a second low friction yarn comprising a 1/70/34 Z twist yarn having a twist in the opposite direction of the first low friction yarn, and a second high friction yarn comprising 200 dtex silicone yarn, the first and second high friction yarn being held in position with the first low friction yarn and the second low friction yarn, said high friction yarns exposed to contact the wearer's skin in the anti-slip portion so as to increase the anti-slip properties of the garment.

A therapeutic medical device comprising a knitted garment having a knitted anti-slip portion, said knitted anti-slip portion including a repeating pattern of arranged knitted yarns, the repeating pattern having a first low friction yarn comprising a 1/70/34 S twist S twist yarn, a first high friction yarn comprising 200 dtex silicone yarn, a second low friction yarn comprising a 1/70/34 Z twist yarn having a twist in the opposite direction of the first low friction yarn, and a second high friction yarn comprising 200 dtex silicone yarn, the first and second high friction yarn being held in position with the first low friction yarn and the second low friction yarn, said high friction yarns exposed to contact the wearer's skin in the anti-slip portion so as to increase the anti-slip properties of the garment.