gait - Rlawson9, CC BY-SA 3.0 <https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons
feet - Public Domain
nerve - OpenStax, CC BY 4.0 <https://creativecommons.org/licenses/by/4.0, via Wikimedia Commons
proprioceptive - Onearmer, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons
barefoot - Pure male feet, CC0, via Wikimedia Commons
muscles - Laboratoires Servier, CC BY-SA 3.0 <https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons
ligaments - Laboratoires Servier, CC BY-SA 3.0 <https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons
foot - Public Domain
joints - Laboratoires Servier, CC BY-SA 3.0 <https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons
bunions - Angela Simon, CC BY-SA 3.0 <https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons
hammer toes - National Diabetes Information Clearinghouse / National Institutes of Health, Public domain, via Wikimedia Commons
plantar fasciitis - InjuryMap, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons
joint - Laboratoires Servier, CC BY-SA 3.0 <https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons
soft tissues - Cancer Research UK, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons
free radicals - Healthvalue, CC BY-SA 3.0 <https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons
flexible - GuillemMedina, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons
heel drop - HLHJ, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons