Ankle Mobility
topic
Ankle dorsiflexion — the forward movement of the shin over a fixed foot — is the most frequently inadequate joint mobility in the lower extremity, with restriction from calf tightness, ankle joint capsule stiffness, or previous ankle sprains producing compensatory movements up the kinetic chain: excessive foot pronation, knee valgus collapse, hip internal rotation, and anterior pelvic tilt that collectively load the knee, hip, and lower back with forces they are not designed to manage, contributing to patellofemoral pain, IT band syndrome, hip impingement, and lower back pain.
Role
Ankle dorsiflexion restriction is arguably the most consequential lower-body mobility deficit affecting movement quality — yet it is the mobility assessment performed by almost no trainer, coach, or physical therapist in standard practice, despite its direct kinematic relationship to the majority of lower-extremity overuse injuries that bring recreational athletes to clinical care. The person with 10 degrees less dorsiflexion than optimal is not merely limited in squat depth — they are loading their knees, hips, and lower back with compensatory stress in every step of every run and every rep of every lower body exercise, accumulating the overuse injury potential that eventually materializes as a named condition treated in isolation.