To maintain their effectiveness, plantar fasciitis insoles should typically be replaced every 6 to 12 months, depending on usage. If you frequently wear sneakers or sports shoes and engage in high-impact activities, you may notice that the arch support and cushioning wear out faster. Pay attention to signs of wear such as reduced support or a compressed heel cup, as this can affect how well the insoles are addressing your foot pain and heel pain. Regularly replacing your fasciitis insole ensures continuous relief and support for your plantar fascia.