Shop Tibial Tendonitis Xline TPD insoles are an instant solution to Tibialis Posterior Dysfunction as it offers comfortable support of the foot and arch Achilles Tendonitis Arch Pain Arthritis Athlete’s Foot Blisters Callus Cavus Foot HomeConditionsTibial Tendonitis X-Line TPD Insoles The TPD insole is an orthotic device designed for Tibialis Posterior Dysfunction, a condition that can cause rapidly developing flat feet and pain on the inside of ankle, arch and/or shin. £28.95 + More Stay one steap ahead in the treatment of foot and lower limb conditions. Call the HealthyStep team on 01457 839549