What bone is stronger than concrete?

Did you know that there is a bone in our body that is stronger than concrete? Yes, you read it right! The mighty human femur bone. It might sound surprising, but the strength of the femur bone can withstand an incredible amount of weight and pressure without breaking.


The human skeletal system provides structural support to the body and protects delicate organs. Bones act as pillars for muscles, ligaments, and tendons to attach themselves too. Without bones, our bodies would be nothing more than a mass of tissues. But not all bones are created equal; some are brittle while others are sturdy enough to resist external forces like impacts or falls.

What is the Femur Bone?

The femur bone or thighbone located in the upper leg region between the hip joint and knee joint. It is one of two large bones forming part of your lower extremities alongside your tibia (shinbone).

Fun fact: Did you Know?

Your thigh bone alone comprises more than 1/4th of your entire height? Now imagine if it was made up only of jelly-like substance!

The femur measures about 18-20 inches long on average for an adult male whereas females have slightly shorter ones by few centimeters generally speaking.

Why Femur Bones are stronger than concrete?

To understand why we often compare this thin calcium-packed layer with something as strong as concrete – let’s dive into material science!

Material Composition

Femurs consist mostly (two-thirds roughly)of mineral hydroxyapatite crystals which give them their hardness/strength points compared to other lightweight materials such as wood/metal/plastic/polymers/natural fibres). Other constituents include protein fibers(collagen/elastin), water molecules along with minerals such as sodium & potassium ions which help maintain structure while giving flexibility so movements do not end up breaking/cracking bones easily.

Structural design

Structure deformations also play a crucial role that results in the ability of final output bearing higher loads without failure. The thigh bone has a unique structure that helps to retract forces away from the weakest parts and distribute them better across their length – this means resisting bending or torsional moments which could be fatal.

Strength comparisons

Now let’s get down to business, here are some force numbers for comparison:

  • Concrete has compressive strength around 4,000-5,000 PSI (pounds per square inch) depending on factors such as mix composition/density/time exothermic reaction temperature lasts/etc.
  • On average Femur Bone can resist pressure/forces equivalent up-to approximately 9500 psi!

Doesn’t it blow your mind when we compare these two materials! However biomechanics also contribute a lot more than just understanding few physical/bio-material property values while appreciating how amazingly capable nature is.

How strong does it need to be?

Ask yourself why do you even need something so sturdy? Are you planning on building something out of human femur sticks or falling off cliffs made of concrete rubble? What practical applications might hinge on knowing what bone would hold better in rock slides during an earthquake?


Interestingly enough people have immortalized femurs into public art installations like cathedrals! Skulls and bones make amazing pieces if shaped right showing continuity with dead eras/people which doesn’t give much credence to its inherent material properties but rather cultural/social value behind them still being talked about today by academics/scientists/archaeologists generations after they died themselves. This may sound grim but whatever floats your boat…people who’ve travelled far often bring back souvenirs or items collected along way – same goes for ancient hunters/gatherers/warrior tribes seeking trophies/symbolic objects in rivalry conflicts/wars/death rituals.

Medical Applications

In the medical world, femurs are co-opted into materials for surgically repairing bones in cases of traumatic injuries like car accidents/large falls or disease-related risk factors such as osteoporosis – this being commonly referred to external fixation with intramedullary rods or plates/screws provided root support which accelerates rapid healing. Also, doctors have studied properties of these bones intently and still do in order to better comprehend bone health/structure maintenance/growth.


The human body is an exquisite dynamic machine packing tremendous power/magic! And if nothing else we’ve gained a newfound appreciation for our bodies – after all Femur itself seems like it can withstand more than most man-made buildings without collapsing under pressure/stress leading us anywhere down-line from feeling self-paranoid about its vulnerability when day-to-day life challenges present & beyond. So remember next time while carrying out your daily errands/spending long hours sitting around that inside you rests one thing mightier than many earthly substances combined!

Tip: Eat well, Exercise often in moderation so that bones stay healthy/firm over time… Don’t skip leg-days at the gym folks! 😉

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