This is a deep dive into the Anatomy, Pathophysiology, Aetiology, Staging, Diagnosis and Management Strategies of the Progressive Collapsing Flatfoot, Adult Acquired Flatfoot/ PTTD. I will be taking you through the clinical presentation, my assessment techniques, Imaging modalities and vitally, when to refer on and what we could be referring on for. A fascinating subject of a condition that can be overlooked and if diagnosed early enough, conservative measures can be life changing to each and every patient who comes into your clinical spaces. I look forward to having an open discussion around your clinical experiences and welcome any questions surrounding the subject!