Retrocalcaneal Enthesophytes and Radiographic Predictors of Failing Nonoperative Management in Insertional Achilles Tendinopathy: A Retrospective Cohort Study. - McCahon JAS; Kohring A; Schultz MJ; Massaglia J; Patrizio HA; Parekh SG; Pedowitz DI; Daniel JN (Foot & ankle specialist, 2025)