Tibia

Jai Ganesh · Yesterday 17:02:48

Tibia

Gist

The tibia, or shinbone, is the largest, strongest, and second-longest bone in the human body, located in the lower leg between the knee and ankle. As the primary weight-bearing bone of the lower leg, it articulates with the femur at the knee and the talus/fibula at the ankle.

The tibia, or shinbone, is the most commonly fractured long bone in the body. A tibial shaft fracture occurs along the length of the bone, below the knee and above the ankle. It typically takes a major force to cause this type of broken leg.

Summary

The tibia, also known as the shinbone, shankbone or simply the shin, is the larger, stronger, and anterior (frontal) of the two bones in the leg below the knee in vertebrates (the other being the fibula, behind and to the outside of the tibia); it connects the knee with the ankle. The tibia is found on the medial side of the leg next to the fibula and closer to the median plane. The tibia is connected to the fibula by the interosseous membrane of leg, forming a type of fibrous joint called a syndesmosis with very little movement. The tibia is named for the flute tibia. It is the second largest bone in the human body, after the femur. The leg bones are the strongest long bones as they support the rest of the body.

Structure

In human anatomy, the tibia is the second largest bone after the femur. As in other vertebrates the tibia is one of two bones in the lower leg, the other being the fibula, and is a component of the knee and ankle joints. The tibia together with the fibula make up the front part of the leg, between the knee and the ankle, known as the shin.

The ossification or formation of the bone starts from three centers, one in the shaft and one in each extremity.

The tibia is categorized as a long bone and is as such composed of a diaphysis and two epiphyses. The diaphysis is the midsection of the tibia, also known as the shaft or body. While the epiphyses are the two rounded extremities of the bone; an upper (also known as superior or proximal) closest to the thigh and a lower (also known as inferior or distal) closest to the foot. The tibia is most contracted in the lower third and the distal extremity is smaller than the proximal.

Details

The tibia is the second-longest bone in your body. It plays an important role in how you stand, move and keep your balance. It’s also an anchor for other tissue, like muscles, tendons, ligaments and nerves. Tibias are strong. So, it usually takes a serious injury like a car accident to break them.

What Is the Tibia?

The tibia is your shin bone. It’s an important part of how you can stand and move.

It’s the second-longest bone in your body. Most adults’ tibias are around 15 inches (38 centimeters) long. Only your thigh bone (femur) is longer.

Your tibias are some of your strongest bones. So, they won’t need much maintenance. But listen to your body if you’re feeling pain or any other symptoms. Everyone has an occasional ache or pain. See a healthcare provider if you’re feeling bone pain from deep inside your shin or know you experienced an injury.

Function:

What does the tibia do?

Your tibia has several important jobs, including:

* Supporting the weight of your body when you stand and move
* Stabilizing you as you move
* Linking your ankle and knee joints together so they can work to move your legs
* Anchoring muscles, tendons and ligaments in your legs, knees and ankles

Anatomy:

Where is the tibia located?

You have one tibia in each shin. It’s the bigger bone in your lower leg that’s closer to the front. The calf bone (fibula) is the other.

The tibia runs from just under your knee to your ankle. It’s closer to the inside of your body than the fibula.

What does the tibia look like?

The tibia has a flat end that forms a shelf at the bottom of your knee, a long middle shaft and a notch at the bottom where it forms your ankle.

These three sections each have a medical name:

* Proximal aspect: This is the upper end of your tibia, near your knee. The parts of the proximal aspect include the medial condyle, lateral condyle and intercondylar eminence.
* Shaft: This is the long middle of the tibia. It’s what supports your weight and forms the structure of your shin. It has three sides and is roughly shaped like a 3D triangle. The shaft includes the anterior border, posterior surface, soleal line and lateral border.
* Distal aspect: This is the lower end of your tibia. It connects to the fibula and talus, and sits on top of the heel bone (calcaneus). This forms your ankle joint. The distal aspect includes the medial malleolus and fibular notch.

You’ll probably never need to know or remember these medical names and labels. They’re usually more for your healthcare provider to use as they describe where something is affecting your tibia. You might see some of these words on an X-ray result, for example.

Conditions and Disorders:

What are the common conditions and disorders that affect the tibia?

Your tibias are strong, but injuries and some health conditions can damage them, including:

* Tibia fractures: Broken tibias are less common than other bone fractures. That’s because they’re one of your strongest bones. It usually takes a severe injury, like a fall from a roof or a car accident, to break them.
* Osteoporosis: This condition weakens your bones. Your provider might suggest a bone density test if you’re over 50 or have a biological family history of osteoporosis.
* Osgood-Schlatter disease: This causes pain in your knee and upper shin when tendons pull against the top of your shin bone. It usually affects growing kids and teens. It’s sometimes called jumper’s knee.
* Paget’s disease of the bone: This condition causes your affected bones to constantly break down and reform. It’s more common in people over 50 of Northern European descent.

Visit a healthcare provider if you notice any new pain or other symptoms in your shin. Especially if they last more than a few days. Go to the emergency room if you think you might have a broken tibia. Don’t try to walk or put weight on that leg.

Additional Information

The tibia is one of your leg bones. Some tibia conditions commonly affect kids and can cause leg pain or trouble walking.

What Is the Tibia?

The tibia, also called the shin bone, is one of the two bones in your lower leg. It’s the second-longest bone in your body after your thigh bone. The tibia is paired with a shorter leg bone called the fibula, and they’re connected with an interosseous membrane. This membrane is a sheet of connective tissue that acts as a type of joint.

What Is the Function of the Tibia?

Your bones are living organs with a few important functions. They provide structure and shape to your body, help you move, and store minerals like calcium and bone marrow.

There are two types of bone marrow: red marrow, which has stem cells that become red or white blood cells and platelets, and yellow marrow, which becomes fat, cartilage, or bone cells. The tibia is a long bone that contains mostly yellow marrow, but the ends also contain some red marrow.

Your tibia has a few other specific functions, too.

* Bears weight. As the more prominent bone in your lower leg, your tibia is the weight-bearing bone. It’s the stronger of your lower leg bones, supporting the weight of your body as you move and stand. It also stabilizes your knee and ankle joints with the help of the fibula.

* Muscle attachment. The tibia also serves as a point of attachment for 11 muscles, as well as tendons and ligaments that help you extend and flex your knee joint and move your ankle joint.

Where Is the Tibia Located?
The tibia is in your lower leg between your knee and your ankle. While the slender fibula bone is on the outside, or lateral side, of your lower leg, the tibia is oriented toward the middle (or, medial) part of your lower leg.

There are several tibia parts, including blood vessels and nerves that supply nutrients and signals to the bone. Other tibia structure includes:

Proximal aspect. The proximal part of your tibia is the upper end that connects with your femur. It has a rounded head with a medial condyle and lateral condyle (or, middle and outer knob). Here, medial means its position is closest to the middle of your body.

Related:
How to Prevent Damaging Your Kidneys
The upper end has a flat head with an intercondylar eminence between the two knobs. That’s a raised area where two ligaments attach.

Tibia shaft. The shaft is the long part of the bone that bears your weight. It has an anterior border you can feel just under your skin on your lower leg. The shaft also has a posterior or back surface and a soleal line where muscles attach to the back of your leg.

Distal aspect. The distal aspect of your tibia is the lower end that connects with your ankle. It has a medial malleolus, which forms a large bony bump on the inside of your ankle. It’s sometimes called the little hammer.

The fibular notch is on the outside lower part of your tibia. This is a wide groove that connects with the bottom of the fibula and forms a joint.

Signs Something Could Be Wrong With Your Tibia

While your tibia is one of your strongest bones, it’s not unbreakable. Some signs and symptoms of damage can include:

* Pain when you walk or run
* Inability to bear weight on your leg
* Bowed leg
* In-toeing, where your toes point in instead of straight out
* One leg appears noticeably shorter than the other
* Knee arthritis
* Swelling
* Bruising
* Bump in your skin that’s not usually there.

What Conditions Affect Your Tibia?

Lots of conditions can affect your tibia bone. Some of the most common include:

* Tibia injuries. Tibia fractures (or, broken tibia bones), are one of the most common injuries of the lower limbs in children. A fracture can be a low-energy break caused by falling or twisting your leg or a high-energy break caused by extreme force, like a fall from heights or a car accident.

* Osgood-Schlatter disease. This disease often causes knee pain, occurring because of irritation of the growth plate at the top of your shin bone. The tendon that connects the kneecap to the tibia pulls on the growth plate and causes pain during activity and sports. This disease affects kids during puberty and goes away on its own without lasting effects.

* Blount disease. This condition also affects the growth plate at the top of the tibia in children. It happens when extra weight puts pressure on the growth plate and stops the bone from growing normally. The inside slows down, but the outside keeps growing, which causes the tibia to bow outward instead of growing straight.

* Paget’s disease of bone. Paget’s disease of the bone happens when your bones repair themselves at a faster rate than normal. Your bones thus become soft or too large, which leads to bending and weakness. This mostly affects older people.

* Osteoporosis. Your bones continually break down and rebuild. Osteoporosis happens when your bones can’t keep up with the loss of old bone, which causes weak and brittle bones. They become so brittle that even mild stress can lead to a broken bone. Anyone can get osteoporosis, but older white and Asian women have a higher risk.

* Shin splints. Also known as tibial stress syndrome, shin splints are the pain you get on the front of your lower legs from exercise. This happens when you repeatedly stress your shin bone from running, after you increase exercise intensity, or because of flat feet or high arches.

How Can You Keep Your Tibia Healthy?

Your tibiae are important for movement and stabilization. You can keep your bones healthy with a few simple habits, like:

* Getting regular exercise
* Maintaining a healthy weight
* Eating a healthy, balanced diet
* Wearing protective gear during sports

If you have ongoing or severe pain, leg deformity, or you can’t use or move your leg, especially after a fall or accident, seek medical attention.

Math Is Fun Forum

#1 Yesterday 17:02:48

Tibia

Board footer