A bone fracture (sometimes abbreviated FRX or Fx, Fx, or #) is a medical condition in which there is a break in the continuity of the bone. Bones form the skeleton of the body and allow the body to be supported against gravity and to move and function in the world. Bones also protect some body parts, and the bone marrow is the production center for blood products.
Fracture pain is a common aftermath of falls, injuries, motor vehicles, direct blows, and extreme pressures over bones. It is manifested when breaks on bones are apparent. Pathological reasons, direct forces, and muscular contractions are the common causes of fracture pain. This is particularly present among athletes who engage into high-velocity sports such as soccer, football, and the like. Delayed healing of tendons and ligaments also cause fracture pain.
Bone is not a stagnant organ. It is the body’s reservoir of calcium and is always undergoing change under the influence of hormones. Parathyroid hormone increases blood calcium levels by leeching calcium from bone, while calcitonin has the opposite effect, allowing bone to accept calcium from the blood.
What causes a fracture?
When outside forces are applied to bone it has the potential to fail. Fractures occur when bone cannot withstand those outside forces. Fracture, break, or crack all mean the same thing. One term is not better or worse than another. The integrity of the bone has been lost and the bone structure fails.
Causes of fracture pains include sustained injuries to bones after an accident or fall. Another cause would be incomplete healing of the traumatized structures. If improper management is done, infection can set in and severe pain would be definitely present. A stress fracture occurs when there is repetitive force done such as running. Continuous running puts stress on bones of the legs and feet, eventually causing small cracks to form over the bones. In some individuals, pathological reasons such as osteomalacia, syphilis, and osteomyelitis cause their bones to break spontaneously without trauma.
Broken bones hurt for a variety of reasons including:
- The nerve endings that surround bones contain pain fibers and and these fibers become irritated when the bone is broken or bruised.
- Broken bones bleed, and the blood and associated swelling (edema) causes pain.
- Muscles that surround the injured area may go into spasm when they try to hold the broken bone fragments in place, and these spasms cause further pain.
Often a fracture is easy to detect because there is obvious deformity. However, at times it is not easily diagnosed. It is important for the physician to take a history of the injury to decide what potential problems might exist. Moreover, fractures don’t always occur in isolation, and there may be associated injuries that need to be addressed.
Fractures can occur because of direct blows, twisting injuries, or falls. The type of forces on the bone may determine what type of injury that occurs. Descriptions of fractures can be confusing. They are based on:
- where in the bone the break has occurred,
- how the bone fragments are aligned, and
- whether any complications exist.
The first step in describing a fracture is whether it is open or closed. If the skin over the break is disrupted, then an open fracture exists. The skin can be cut, torn, or abraded (scraped), but if the skin’s integrity is damaged, the potential for an infection to get into the bone exists. Since the fracture site in the bone communicates with the outside world, these injuries need to be cleaned out aggressively and many times require anesthesia in the operating room to do the job effectively.
Next, there needs to be a description of the fracture line. Does the fracture line go across the bone (transverse), at an angle (oblique) or does it spiral? Is the fracture in two pieces or is it comminuted, in multiple pieces?
Finally, the fracture’s alignment is described as to whether the fracture fragments are displaced or in their normal anatomic position. If the bones fragments aren’t in the right place, they need to be reduced or placed back into their normal alignment.
What are common types of fractures?
A stress fracture is an overuse injury. Because of repeated micro-trauma, the bone can fail to absorb the shock that is being put upon it and become weakened. Most often it is seen in the lower leg, the shin bone (tibia), or foot. Athletes are at risk the most, because they have repeated footfalls on hard surfaces. Tennis players, basketball players, jumpers, and gymnasts are typically at risk. A March fracture is the name given to a stress fracture of the metatarsal or long bones of the foot. (It is named because it often occurs in soldiers who are required to march long distances.)
Diagnosis is made by history and physical exam, though on occasion a bone scan may be done to confirm the diagnosis.
Treatment is conservative, rest, ice, and anti-inflammatory medication like ibuprofen. These fractures can take six to eight weeks to heal (as long as the fracture can be seen on x-ray).
Shin splints may have very similar symptoms as a stress fracture of the tibia but they are due to inflammation of the lining of the bone, called the periosteum. Shin splints are caused by overuse, especially in runners, walkers, dancers, including those who do aerobics. Muscles that run through the periosteum and the bone itself may also become inflamed.
Treatment is similar to a stress fracture and physical therapy can be helpful.
As people age, there is a potential for the bones to develop osteoporosis, a condition where bones lose their calcium content. This makes bone more susceptible to breaking. One such type of injury is a compression fracture to the spine, most often the thoracic or lumbar spine. Since we are an upright animal, if the bones of the back are weaker than the force of gravity these bones can crumple. Pain is the major complaint, especially with movement.
Compression injuries of the back may or may not be associated with nerve or spinal cord injury. An x-ray of the back can reveal the bone injury, however, sometimes a CT scan or MRI will be used to insure that no damage is done to the spinal cord.
Treatment includes pain medication and often a back brace. Some compression fractures can also be treated with vertebroplasty. Vertebroplasty involves inserting a glue-like material into the center of the collapsed spinal vertebra in order to stabilize and strengthen the crushed bone. The glue (methylmethacrylate) is inserted with a needle and syringe through anesthetized skin into the midportion of the vertebra under the guidance of specialized x-ray equipment. Once inserted, the glue soon hardens, forming a cast-like structure with the locally broken bone.
The ribs are especially vulnerable to injury and are prone to breaking due to a direct blow. Rib x-rays are only sometimes taken as it doesn’t matter if the rib is broken or just bruised. A chest x-ray is usually taken to make certain there is no collapse or bruising of the lung.
When we breathe, it is like a bellows. We inhale air into our lungs and the ribs move out and the diaphragm moves down. When a person has a rib injury, the pain associated with it makes breathing difficult, and the person has a tendency to not take deep breaths. If the lung underlying the injury does not expand, it is at risk for infection. The person is then susceptible to pneumonia (lung infection),which is characterized by fever, cough, and shortness of breath.
As opposed to other parts of the body that can rest when they are injured, it is very important to take deep breaths to prevent pneumonia when rib fractures are present. The treatment for bruised and broken ribs is the same: ice to the chest wall, ibuprofen as an anti-inflammatory, deep breaths and pain medication.
With lower rib fractures, there may be concern about organs in the abdomen that the ribs protect. The liver is located under the ribs on the right side of the chest, and the spleen under the ribs on the left side of the chest. Many times your doctor may be more worried about abdominal injury than about the broken rib itself. Ultrasound or CT scan may help diagnosis intra-abdominal injuries.
With the wide availability of CT scans, skull x-rays are rarely taken to diagnose head injury. If a head injury exists, the physician will feel or palpate the scalp and skull to determine if there may be a skull fracture. He will also look into the ears to see if there is blood behind the ear drumm and he will also complete a neurologic examination.
The skull is a flat, compact bone and it takes significant force to break it. If a skull fracture exists, there is an increased likelihood of bleeding in the brain, especially in children. There are guidelines that are available to decide whether a CT scan is indicated (needed).
Minor head injury is defined as witnessed loss of consciousness, definite amnesia, or witnessed disorientation in patients with a GCS (Glasgow Coma Score) score of 13-15. With minor head injury, the following risk groups are considered when evaluating need for CT brain scan:
High risk for potential neurosurgical operation
- Abnormal neurologic exam within two hours after injury
- Suspected open or depressed skull fracture
- Any sign of basal skull fracture (blood behind the ear drum, blackened eyes, clear fluid running from the ears, or bruising behind the ear)
- Vomiting – two episodes
- 65 years of age or older
Medium risk (for brain injury on CT)
- Amnesia before impact – more than 30 minutes
- Dangerous mechanism (pedestrian struck by motor vehicle, occupant ejected from motor vehicle, fall from height greater than 3 feet or five stairs)
Bone fracture diagnosis is done by the doctor by initially asking the patient the cause of the injury, when the injury occurred and what other part of the body is in pain. xrays will be taken if the doctor sees bone fracture symptoms through physical examination. If there is a complete fracture with total dislocation of the bone and with fragmented bones, this injury will be considered an emergency case and require surgery and internal fixation. Some doctors straightly recommend the use of MRI or CT scans to see clearer images of the bones and so even the hairline fractures can be detected. If the patient is suffering from osteoporosis, bone scans or xrays may also be recommended to know total coverage of the fracture. Rehabilitation or rehab is necessary.
There are also different ways to treat bone injuries but the most popular type is the use of cast especially if the injured part is anywhere on the limb. The bones that are displaced will be put back in place with the use of bone traction. No surgery is needed if there are no bone fragments that will be revealed by the x-rays. The cast will immobilize the limb until the bones heal. The person will have to undergo physical therapy when the bone has finally joined again but the person must avoid heavy stress to avoid the recurrence of the fracture.
The second option is the surgery and the use of internal fixation. This is done for complete fractures with multiple fragments. The use of wires, pins, and plates is inevitable because there is the need to reattach the bones altogether. For long bones, metal rods are inserted through the bones to join the bones together. External fixation can also be used to properly align long bones. In this type of treatment, the long bones are connected with metal pins and these pins are attached to the external fixator that is placed outside the skin over the injured area. The external fixator is also made up of metal rods with adjusters and it is there to keep the bones from getting out of their position until it heals.
How The Treatment Works:
In internal fixation, when the bone are fixed through wires, pins or metal rods, the bone will produce calluses within the fractured part once bones are joined together. These calluses will hardened into calcium deposits and will be closing the cracks altogether. The same thing goes for bones that underwent bone reduction or casting. Bone healing time or recovery time may be from weeks to months depending on the severity of the fracture and if there are no complications that went along with the treatment. Physical therapy follows after the bone has been removed off its cast. This is to strengthen the muscles and condition the bone so that bone remodeling can take place.
There are many ways in preventing fractured bones from happening but the best way is to avoid doing anything that could cause harm to your body. In sports, there are protective gears which you could wear to protect your body’s bony parts such as knee pads, wrist bands, elbow pads, helmets, and shin pads and so on. Although these things cannot entirely stop the injury, at least the risk of having a severe fracture can be minimized.