The best corrective strategy for managing flatfoot (pes planus) combines orthotic insoles with regular intrinsic foot muscle strengthening exercises. This dual approach addresses both the immediate biomechanical need and the underlying muscular weakness:
Orthotic insoles provide external arch support, redistributing pressure across the foot, correcting alignment, and reducing pain during weight-bearing activities. They compensate for the collapsed or absent arch and improve the overall mechanics of the foot, ankle, knee, and hip.
Intrinsic foot muscle strengthening targets the small muscles within the foot (such as the abductor hallucis, flexor digitorum brevis, and interossei) that naturally support the medial longitudinal arch. Exercises like towel curls, marble pickups, and short-foot exercises help rebuild the muscular arch support from within.
The other strategies are either counterproductive or insufficient:
Wearing flexible flat shoes would allow the arch to flatten further rather than providing corrective support.
Completely avoiding barefoot walking is overly restrictive. Controlled barefoot activity on suitable surfaces can actually help strengthen foot muscles.
Significantly reducing physical activity leads to further muscle atrophy and deconditioning, worsening the condition rather than improving it.