Strains & Broken Bones

The word break is commonly used by non-medical professional people. Among health care professionals, especially bone specialists, such as orthopedic surgeons, a break is a much less common term when talking about bones.

A fracture also referred to as a bone fracture is a medical condition where the continuity of the bone is broken. A significant percentage of bone fractures occur because of high force impact or stress; however, a fracture may also be the result of some medical conditions which weaken the bones, for example, osteoporosis, some cancers or osteogeneris imperfecta. A fracture caused by a medical condition is known as a pathological fracture.

A crack (not only a break) in the bone is also known as a fracture. Fractures can occur in any bone in the body. There are several different ways in which a bone can fracture; for example, a clean break to the bone that does not damage surrounding tissue or tear through the skin is known as a closed fracture or a simple fracture. On the other hand, one that damages surrounding skin or tissue is known as a compound fracture or an open fracture. The compound or open fractures are generally more serious than simple fractures, with a much higher risk of infection.

Most human bones are surprisingly strong and can generally stand up to fairly strong impacts or forces. However, if that force is too powerful, or there is something wrong with the bone, it can fracture.

The older we get the less force our bones can withstand. Approximately 50% of women and about 20% of men have a fracture after they are 50 years old (Source: National Health Service, UK).

Because children’s bones are more elastic, when they do have fractures they tend to be different. Children also have growth plates at the end of their bones – areas of growing bone – which may sometimes be damaged.

Some different types of fractures may include:

Avulsion fracture – a muscle or ligament pulls on the bone, fracturing it.

Comminuted fracture – the bone is shattered into many pieces.

Compression (crush) fracture – generally occurs in the spongy bone in the spine. For example, the front portion of a vertebra in the spine may collapse due to osteoporosis.

Fracture dislocation – a joint becomes dislocated, and one of the bones of the joint has a fracture.

Greenstick fracture – the bone partly fractures on one side but does not break completely because the rest of the bone can bend. More common among children, whose bones are softer and more elastic.

Hairline fracture – a partial fracture of the bone. Often this type of fracture is harder to detect.

Impacted fracture – when the bone is fractured, one fragment of bone goes into another.

Longitudinal fracture – the break is along the length of the bone.

Oblique fracture – A fracture that is diagonal to a bone’s long axis.

Pathological fracture – when an underlying disease or condition has already weakened the bone, resulting in a fracture (bone fracture caused by an underlying disease/condition that weakened the bone).

Spiral fracture – A fracture where at least one part of the bone has been twisted.

Stress fracture – more common among athletes. A bone breaks because of repeated stresses and strains.

Torus (buckle) fracture – bone deforms but does not crack. More common in children. It is painful but stable.

Transverse fracture – a straight break right across a bone.

What are the warning signs and symptoms of a bone fracture?

A symptom is something the patient feels and reports, while a sign is something other people, such as the doctor detect. For example, pain may be a symptom while a rash may be a sign. The signs and symptoms of a fracture vary according to which bone is affected, the patient’s age and general health, as well as the severity of the injury. However, they may include some of the following:

The discolored skin around the affected area
Angulation – the affected area may be bent at an unusual angle
The patient is unable to put weight on the injured area
The patient cannot move the affected area
The affected bone or joint may have a grating sensation
If it is an open fracture there may be bleeding
The sufferer may look pale and clammy
There may be dizziness (feeling faint).
A feeling of sickness and nausea

If possible, do not move a person with a broken bone until a health care professional is present and can assess the situation and, if required, apply a splint. Obviously, if the patient is in a dangerous place, such as in the middle of a busy road, one sometimes has to act before the emergency services arrive.
What are the causes of bone fractures?
The majority of fractures are caused by a bad fall or automobile accident. Healthy bones are extremely tough and resilient and can withstand surprisingly powerful impacts. When people enter old age two factors make their risk of fractures greater; weaker bones and a greater risk of falling.

Children, who tend to have more physically active lifestyles than adults, are also prone to fractures.

People with underlying illnesses and conditions that may weaken their bones also have a higher risk of fractures. Examples include osteoporosis, infection, or a tumor. As mentioned earlier, this type of fracture is known as a pathological fracture.

Stress fractures, which result from repeated stresses and strains, commonly found among professional sports people, are also common causes of fractures.

How is a fracture diagnosed?

A doctor will carry out a physical examination, identify signs and symptoms and make a diagnosis. The patient will be interviewed – or friends, relatives or witnesses if the patient cannot communicate properly – and asked about circumstances that clearly caused the injury or may have caused it.

Doctors will often order an X-ray. In some cases, an MRI (magnetic resonance imaging) or CT (computed tomography) scan may also be ordered.

What are the treatment options for a bone fracture?

Bone healing is a natural process which in most cases will occur automatically. Fracture treatment is usually aimed at making sure there is the best possible function of the injured part after healing. Treatment also focuses on providing the injured bone with the best circumstances for optimum healing (immobilization).

For the natural healing process to begin, the ends of the broken bone need to be lined up – this is known as reducing the fracture.

The patient is usually asleep under a general anesthetic when fracture reduction is done. Fracture reduction may be done by manipulation, closed reduction (pulling the bone fragments), or surgery.

Immobilization – as soon as the bones are aligned they must stay aligned while they heal. This may include:

Plaster casts or plastic functional braces – these hold the bone in position until it has healed.

Metal plates and screws – current procedures use minimally invasive techniques.

Intra-medullary nails – Internal steel rods are placed down the center of long bones. Flexible wires may be used in children.

External fixators – these may be made of metal or carbon fiber; they have steel pins that go into the bone directly through the skin. They are a type of scaffolding outside the body.

Usually, the fractured bone area is immobilized for between two to eight weeks. The duration depends on which bone is affected and whether there are any complications, such as a blood supply problem or an infection.

Healing – if a broken bone has been aligned properly and kept immobile the healing process is usually straightforward.

Osteoclasts (bone cells) absorb old and damaged bone while osteoblasts (other bone cells) are used to create new bone. Callus is formed; callus is new bone which is formed around a fracture. It forms on either side of the fracture and grows towards each end until the fracture gap is filled. Eventually, the excess bone smoothes off and the bone is like it used to be before.

The patient’s age, which bone is affected, the type of fracture, as well as the patient’s general health are all factors which influence how rapidly the bone heals. If the patient smokes regularly the healing process will take longer.

Physical therapy (UK: physiotherapy) – after the bone has healed it may be necessary to restore muscle strength as well as mobility to the affected area. If the fracture occurred near or through a joint there is a risk of permanent stiffness – the individual may not be able to bend that joint as well as before.

Surgery – if there was damage to the skin and soft tissue around the affected bone or joint, plastic surgery may be required and Yuba City Urgent Care is ready to help you out.

Delayed unions and non-unions

Non-unions are fractures that fail to heal, while delayed unions are those that take longer to heal.

Ultrasound therapy – low-intensity ultrasound is applied daily to the affected area. This has been found to help the fracture to heal. Studies in this area are still ongoing.

Bone graft – if the fracture does not heal a natural or synthetic bone is transplanted to stimulate the broken bone.

Stem cell therapy – studies are currently underway to see whether stem cells can be used to heal fractures that do not heal.

What are the possible complications of a bone fracture?

Heals in the wrong position – this is known as a malunion; either the fracture heals in the wrong position or it shifts (the fracture itself shifts).

Disruption of bone growth – if a childhood bone fracture affects both ends of bones, there is a risk that the normal development of that bone may be affected, raising the risk of a subsequent deformity.

Persistent bone or bone marrow infection – if there is a break in the skin, as may happen with a compound fracture, bacteria can get in and infect the bone or bone marrow, which can become a persistent infection (osteomyelitis). Patients may need to be hospitalized and treated with antibiotics. Sometimes surgical drainage and curettage are required.

Bone death (avascular necrosis) – if the bone loses its essential supply of blood it may die.
Prevention of fractures
Nutrition and sunlight – the human body needs adequate supplies of calcium for healthy bones. Milk, cheese, yogurt and dark green leafy vegetables are good sources of calcium. Our body needs vitamin D to absorb calcium – exposure to sunlight, as well as eating eggs and oily fish are good ways of getting vitamin D.

Physical activity – the more weight-bearing exercises you do, the stronger and denser your bones will be. Examples include skipping, walking, running, and dancing – any exercise where the body pulls on the skeleton.

Older age not only results in weaker bones but often in less physical activity, which further increases the risk of even weaker bones. It is important for people of all ages to stay physically active.

The menopause – estrogen, which regulates a woman’s calcium, starts to drop and continues to do so until after the menopause; levels never come back up to pre-menopausal levels. In other words, calcium regulation is much more difficult after the menopause. Consequently, women need to be especially careful about the density and strength of their bones during and after the menopause. The following steps may help reduce post-menopausal osteoporosis risk:

Do several short weight-bearing exercise sessions each week.
Do not smoke.
Consume only moderate quantities of alcohol, or don’t drink it.
Make sure you get adequate exposure to daylight.
Make sure your diet has plenty of calcium-rich foods, or talk to your doctor about taking calcium supplements.

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