This is my first choice for posterior tibial tendon dysfunction (PTTD), because you need a firm medial arch support that won’t sink or sag under load. It can be used for plantar fasciitis, but for many people it will be too firm, and the cushioning insole is usually a better start for that.

What I like

• A firm arch support that holds its shape under load
• Deep heel cup for stability
• 3/4 length, so it slips under the existing insole and fits in narrower footwear
• Soft top cover with cushioned heel padding
• Comes as a pair, in a range of sizes
• Fits most lace-up shoes, including trainers, walking boots and work boots

Things to know

• It needs breaking in. Because it’s firm and more aggressive, start with a few hours a day and build up gradually over a few weeks, so your foot can adjust.
• It’s firm, so it won’t suit everyone. If it’s uncomfortable or increases your pain, don’t persevere.
• For plantar fasciitis, I usually suggest the softer cushioning insole first, and this one if you need more support.
• Insoles support the foot, but PTTD also needs the strengthening and load management in my article.
• Check the size chart before ordering. This listing is the 9/10.5 UK size.
• If you have new inner ankle pain or swelling, or your arch is collapsing, get it assessed.

Who it suits: people with PTTD who need a firm, supportive medial arch that won’t flatten, and some people with plantar fasciitis or flat feet who need more support than a softer insole gives.

Compare with: the cushioning insole and the PCSsole medial arch support, which are softer and suit most people with plantar fasciitis.

Read my article on posterior tibial tendon dysfunction (PTTD) or watch my video.