RESULTS	The mean Foot Functional Index total and subcategory score improvements were greater in the PRP group compared with the DP group ( improvement with PRP vs DP , total : 30.4 % vs 15.1 % , pain : 29.7 % vs 17.1 % , disability : 26.6 % vs 14.5 % , activity limitation : 28.0 % vs 12.4 % ) .\