Image gallery for: Prehab exercises rolling the biceps femurs to correct valgus knee prehabexercises springmobilitychallenge overactive bicep femoris lateral hamstrings will contribute to an inward collapsing of the knees valgus knee which threatens the integrity of the acl and also leads to an inefficiency in force output and or absorption rolling the lateral hamstrings with an emphasis on the biceps femurs to help restore proper knee alignment additionally combine this targeted focus on the biceps femurs with a targeted focus on the peroneals posterior tibialis and intrinsic foot muscles prehab prepare practice prevent perform