3D Multisegment Foot Model Used for the Clinical Outcome After Ankle and Hindfoot Reconstruction

Inclusion Criteria: * Being routinely scheduled for a reconstructive surgical procedure for the following indications or involving the following type of procedure: 1. Any reconstructive procedure for Pes Planus, Pes Plano-valgus, or Posterior Tibial Tendon Dysfunction 2. Tibio-talar arthrodesis or prosthesis 3. Sub-talar -and/or (partial) Chopart - and/or Triple arthrodesis 4. Pantalar arthrodesis with or without inclusion of the Chopart joint Exclusion Criteria: * Age under 18 * Need of tools (eg walker or crutches) to walk less than 100m * Inability to walk less than 100 m anyway * Differences in leg length exceeding 3 cm (measured clinically) * Extreme in-or outtoeing * Subjects with BMI \> 27.5 require very careful further consideration whether or not the obesity prevents the accurate palpation of anatomical landmarks necessary prior to marker placement. This will be judged on an individual basis.