Whittaker et al. 2018, Foot orthoses for plantar heel pain, a systematic review and meta-analysis

Systematic review and meta-analysis (Whittaker GA, Munteanu SE, Menz HB, Tan JM, Rabusin CL, Landorf KB), British Journal of Sports Medicine. Foot orthoses give modest pain relief in plantar heel pain in the medium term (about 7 to 12 weeks), of uncertain clinical importance, with little effect on function, and prefabricated and customised devices perform similarly. Moderate-quality evidence; moderate.