This joint has to be stable in order to withstand 1.5 times your body weight when you walk and up to eight times your body weight when you run” (Complete Care Physiotherapy Chiropractic).
The ankle is formed where the distal (lower) ends of the tibia and fibula bones of the lower leg meet the talus bone and the calcaneus (heel bone) of the foot.
The joint allows for hinge-like movement: the upward, or dorsiflexion, movement of the foot and the downward, or plantarflexion, movement.
A smooth connective tissue called articular cartilage covers the ends of the bones in the ankle joint, cushioning the force of impact from movements like walking, running, and jumping, and allowing for smooth movement in the joint.
This sturdy joint is further supported by ligaments that surround the joint and, in conjunction with other soft tissues, form the joint capsule of the ankle.
The foot is made up of 26 bones that form 33 joints; the foot also contains over 100 muscles, tendons, and ligaments. An article in SportsMed online notes that “approximately 25% of the bones in the body are found in our feet” (https://sportsmedalabama.com/contents/patient-education/foot-and-ankle/).
The bones of the foot can be grouped into 3 categories: the 7 irregularly shaped tarsal bones, the 5 long metatarsal bones, and the 14 bones called phalanges, which form the toes. Joints are formed at any point where two or more of these bones meet.
Cartilage covered the ends of the bones at each joint, allowing for smooth, protected movement. Muscles, tendons, and ligaments in the foot provide support and allow for movement.