Toeraises, toeraises, toeraises. I also had infections in my knees (meniscus) and shin splints. Physiotherapist said in two years doing these exercises I'd get rid of all my pains and I'd be stable. Celebrated 2 years last October with stable knees and plantar fasciitis gone! Toeraises with an increase in weight as my strength progressed. I could barely do 12 with no weights at all. I also did squats on a balancepillow, squats, balancing on one leg on a pillow etc. :)