Foot and joint disease caused by inappropriate substrates and limited movement is the leading cause of premature death in captive elephants — a welfare crisis rooted in the mismatch between zoo infrastructure and elephant biology.
Elephant locomotion welfare represents a structural failure of zoo design that accumulated over decades before the welfare costs became undeniable. Concrete-floored elephant houses built in the mid-20th century were practical and cleanable but biologically catastrophic for animals that evolved to walk many kilometers daily on soft, varied terrain. The damage is cumulative and irreversible: by the time foot and joint disease becomes clinically apparent, years of harm have already occurred. Modern zoo design has partially addressed this through larger naturalistic exhibits with varied substrates, but retrofitting existing infrastructure is expensive and slow. Many current captive elephants continue to live on substrates that are causing progressive harm — a welfare debt accrued by design decisions made before the evidence was understood.