Anatomy Q&A

How many muscles, ligaments there are in the body VS the foot?

The human skeleton consists of 206 bones. We are actually born with more bones (about 300), but many fuse together as a child grows up. The body’s muscular system consists of about 650 muscles

The foot is an extremely complex anatomic structure made up of 26 bones and 33 joints that must work together with 19 muscles and 107 ligaments to execute highly precise movements. A quarter of all the bones in our body are located in the feet.

The human foot combines mechanical complexity and structural strength. The ankle serves as foundation, shock absorber and propulsion engine

Ligaments are bands of very strong, flexible tissue that perform the important job of connecting bones together. Ligaments are very strong and difficult to injure, but ligament injuries can be serious when they do occur. This is because ligaments do not receive much blood flow like bones and muscles, so they are slow to repair themselves.

There are a lot of bones in the foot, so you might guess correctly that there are a lot of ligaments. In fact there are so many ligaments that we need three different diagrams to show them all to you!

How much load, pressure a foot step can make?

At the same time the foot must be strong to support more than 100,000 pounds of pressure for every mile walked. Even small changes in the foot can unexpectedly undermine its structural integrity and cause pain with every step.

The ankle serves as foundation, shock absorber and propulsion engine The foot can sustain enormous pressure and provides flexibility and resiliency.

Cool bone facts
  • The talus is the only bone in the foot that has no tendons attached to it.
  • The feet have approximately 250 000 sweat glands that can produce more than two decilitres of moisture per day.
  • A structural flaw or malfunction in any one part can result in the development of problems elsewhere in the body such as knee, hip and back pain. Abnormalities in other parts of the body can lead to problems in the feet.
  • This may sound like overkill for a flat structure that supports your weight, but you may not realize how much work your foot does!
  • The longest bone in our bodies is the femur (thigh bone). The smallest bone is the stirrup bone inside the ear.
  • 75% of the population will have foot problems under their life.
  • Our foot size changes 25 times.
  • The calcaneus or hell bone is protected by a chock absorbing cushion of fat in small compartments.
  • When you run your feet take 3 to 4 times your body weight.
  • A big toe nail grows 0,7 mm per day or 2 mm per month.
  • During the eighth week of pregnancy the fingers and toes start to form. At twelve weeks you can see the nailbed on fingers and toes.
  • Our nails consist of 18% of water, but grows dryer with age.
Men VS female knees and hips

Males and females have slightly different skeletons, including a different elbow angle. Males have slightly thicker and longer legs and arms; females have a wider pelvis and a larger space within the pelvis. This causes the female thigh bones to a different angle, clearly obvious when you see a femal run.

The pervis does not only affect how we move and run, it also affects how we sit. There are four different ways to cross your legs. One of which is typically male, one is typically female and the two are neutral. The crossing of the legs at the knees is as common for males as for females, as is the way of crossing the legs at the ankles. The most male leg crossing is to rest the ankle on the knee, and is rarely seen in females. The final way is called The Twinning of Legs and is an all female crossing. It is performed in such a way that the crossed leg´s foot is tucked in behind the other leg. Men find this position very difficult and uncomfortable, and practically impossible to manage.

Sources:

https://sv.wikimini.org/wiki/Fot

http://xn--hlsporrekliniken-vnb.se/ont-under-foten/

https://www.medicinenet.com/image-collection/foot_anatomy_detail_picture/picture.htm

www.livescience.com/37009-human-body.html

http://www.healthcommunities.com/foot-anatomy/foot-anatomy-overview.shtml

https://biologydictionary.net/foot/  

http://www.enchantedlearning.com/subjects/anatomy/skeleton/