Brain mapping is a technique where the biological quantities of a human brain are represented as spatial quantities resulting in maps. As with many other medical technologies, brain mapping is fast-evolving as well. Among several uses, brain mapping is chiefly used while performing surgery on the brain.

When surgery is to be performed on the brain such as surgery for epilepsy, the surgeon would want to comprehend how the brain areas are affected by seizures. The surgical intervention is meant for removing as much as seizure focus as possible while preserving crucial functions like understanding, speech, vision, movement, and sensation.

Why is brain mapping performed?
Brain mapping is a process which helps in identification of functions of various parts of the brain. Mapping the brain by stimulating different areas of the brain areas can aid in creating a map for a particular person. The map allows the doctor in understanding what parts of the brain are responsible for performing critical functions including sensation, movement, speech and other functions.

Which functions of the brain can be mapped electrically?
Typical areas of the brain which have motor, language, visual and sensory functions are needed to be mapped. When current is applied to a single area at a time, the doctor understands which part of the brain is responsible for which function.
When the patient is not able to speak due to the current, then the area is likely to be crucial for language function. If the limbs, face or trunk of the patient stop moving as the current passes, the area that is tested is responsible for movement. On the other hand, if the individual experiences tingling, numbing, and other sensations when the current is applied, it means that a sensory region is discovered.

How is electrical brain mapping performed?
Electrical brain mapping for guiding brain surgery for epilepsy can be performed in two distinct processes: directly during the surgery or in a two-stage procedure.

Two-stage procedure:
In the first stage of the process, the surgeon creates an opening in the skull which helps in exposing the surface of the brain. Small electrical contacts or electrodes are placed on the brain surface even though no brain tissue is removed. As soon as the electrodes are in the right position, the scalp is closed. The electrodes not only record the seizure of the patient electrically but also allow mapping of various areas of the brain. The last stage is surgery where abnormal brain tissues are removed.

Brain mapping process during surgery:
Electrical brain mapping may also be performed during the surgery which exposes part of the brain. This is termed as intraoperative brain mapping since it occurs while performing the main operation. The process of mapping may last for an hour to several hours at a stretch.

Brain mapping is also used to diagnose neurodegenerative diseases like Alzheimer s and Parkinson s. In these cases, the brain map shows extreme shrinkage of the brain due to tissue loss.

Brain Mapping Surgery - Why It Is Performed?

Bone cancer is a cancerous tumour in the bone, destroying the normal bone tissues. Tumours on bone tissues are not always cancerous or malignant, they are mostly benign. Primary bone cancer is when the malignant tumour begins to form in the tissues of the bones, but when these cancerous cells spread to other body parts like breasts, prostate or lungs, it is called metastatic cancer. Primary bone cancer is less common than metastatic cancer.

Bone cancer can be of three different types:

Osteosarcoma: In this case, the malignant tumour arises from the osteoid bone tissue. This occurs mainly in the upper arm and knee areas.

Chondrosarcoma: In this case the cancerous cells form in the cartilaginous tissues, causing a lot of pain. This occurs mostly in the pelvic area.

The Ewing sarcoma generally arises in the bone but it can also form in the soft tissues. Other kinds of soft tissues affecting cancerous cells are known as soft tissue sarcomas.

Causes-

There aren t many clear defined causes; however, several factors have been identified by researchers.

Osteosarcoma is seen to occur more frequently in people who have been through a high external radiation therapy dose.

In people who have frequently been treated with anticancer medications, children tend to be most affected.

Heredity may be an adding cause, although the percentage of hereditary transfer of cancer cells is very low.



People with hereditary bone defects or implants have a higher chance of acquiring bone cancer.

Symptoms-

The most common and saddening symptom of bone cancer is painful, although not all bone cancers cause pain. Unusual or persistent swelling or pain around a bone maybe a red flag for bone cancer. In case of a situation like this, immediate doctor s opinion is required.

Diagnosis-

Usually, diagnosis of a bone cancer can be made using X-rays; for example, a bone scan, a computed tomography scan, a magnetic imaging procedure positron emission tomography, and an angiogram. Biopsy and blood tests are also helpful in bone cancer diagnosis.

Treatment-

The size, location and stage of cancer, age, and health of the person decide the kind of treatment that should be given to the patient. Various treatment options include chemotherapy, radiation therapy and cryosurgery.

Survival-

The combined survival rate of all sorts of bone cancers is 70%. This percentage may vary with the type of bone cancer and also its stage.

An Overview Of Bone Cancer

A fracture requires quick and careful medical attention to ensure proper healing and alignment of the bone. Most fractures usually recover within six weeks but that is only half the problem. A lot of other tissues get damaged in the process when there is enough stress placed in the body to fracture a bone. Additionally, when you are unable to move that bone, you will have joint stiffness and significant muscle weakness.

After a fracture, physiotherapy might be recommended to guarantee that you come back to your ideal capacity. You might have to go for regular appointments to your physiotherapist in order to achieve full recovery. Usually, your physiotherapist will try to prevent your post-fracture stiffness in the nearby joints and muscles after the initial six weeks while you are recovering from your fracture. After six weeks or later, if x-rays show that the bone has not been fully healed, your physiotherapist can take a shot at recovering full movement of the joints and muscles near the affected area. 

Here are five ways in which physiotherapy helps heal post-fracture:

Physiotherapy after a fracture can help you enhance your muscle movement. In case you have fractured your leg, your physiotherapist can help you improve your walk and help you decide whether you need to take the support of a walking stick, crutches or a cane. In case you have broken an arm or shoulder, exercises focused on reaching and grasping are included.
Modalities might be used to help with the pain and swelling. Your physiotherapist may choose to use ice, heat or whirlpool baths.
Electrical stimulation can also be used to improve your muscle movement. You need to keep in mind that while inactive treatments like electrical stimulation or ultrasound might be used, you also need to keep your muscles physically active to better your movement and strengthen your bones.
If you have had surgery to join the fractured bone, you may have surgical scar tissue. Scar massage can decrease scar attachments and increase movement around the scar.
Exercise to improve the scope of movement and strength can also be started. Particular focus points need to be treated in the joints around the fractured area. If you have fractured a bone close to your elbow, exercises need to be included for your elbow, wrist, and shoulder. Moreover, a fracture in the shin needs to include exercises for the knee, lower leg, and hip. Exercise can guarantee that your bone can endure the load during daily routine work. Make sure to consult with your physiotherapist to learn the correct exercises for your condition.
A fracture can be very painful and might lead to a disability or problem in movement. Depending on the seriousness of the damage, the loss may be temporary or permanent. Physiotherapy can help you come back to your optimum function as quickly as possible.

Physiotherapy - 5 Ways It Can Help Post Fracture!

Cancer that originates in the bones of a human body is referred to as bone cancer. Any bone could come under the threat of this disease, but generally the longer bones of your body, so to say the bones of your limbs, are at a greater risk. 

A few factors that might push you an inch closer to bone cancer are:

 Genes could jinx your health: a few typical genetic syndromes could increase a person's chances of contracting bone cancer. These syndromes could have been active in any person belonging to your lineage. One such syndrome is li-fraumeni.
 Treatment for one kind of cancer can make you prone to some other kind: radiation affects your bones adversely. A patient of breast cancer might be undergoing radiation therapy that further increases his or her risk of contracting bone cancer in future. 
 Paget's disease can have unfavorable implications: paget's disease is a disease that affects elderly people. This condition, if left untreated, can turn into bone cancer at a later stage. 

Several symptoms of bone cancer can be found below:

 Sudden loss of weight: if you lose a considerable amount of weight in a few weeks time without having made any effort at all, you should probably be worried about the health of your bones. Bone cancer can result in sudden and unintentional weight loss. 
 Unexpected bone fracture or breakage: cancer of the bones is known to gnaw at the strength of your bones. Weakened and diseased bones can break or get fractured very easily. An unexpected fracture should not be overlooked so as to prevent chances of anything more harmful.
 Long spans of unyielding exhaustion: constant fatigue and sleepiness might be hinting at a more serious underlying problem. The bones in your body hold you together; cancerous bone cells can make you feel exhausted without much exertion as your bones lose their inherent potency.
 Persistent pain in the bones: excruciating cramps or pangs of stinging pain in a person's bones either continuously or at odd hours, could be indicative of bone cancer. Such instances require the advice and guidance of an experienced oncologist.
 Bone swelling: the area affected by bone cancer can grow big and tender or the bone itself can swell up.

All About Bone Cancer

Collectively grouped under the Ewing sarcoma family of tumors, Ewing's sarcoma is the second most common primary bone cancer occurring predominantly in children and in adolescents. Very rarely is it experienced in adults above the age of 30.

Typically forming in the bones of the chest, pelvis, head, back or trunk and in the long bones of the arms and legs, Ewing's sarcoma is believed to originate in certain kinds of primitive cells. When it begins to affect similar kind of cells found outside the bone, it is usually called an extraosseous Ewing's sarcoma.

Causes
1. Similar to all types of Ewing tumors, Ewing's sarcoma is generally caused by an alteration in a certain cell compelling a gene named EWS found on chromosome no. 22 to move over to a DNA section on any one of the surrounding chromosomes resulting in the activation of the EWS gene.
2. While it is not a hereditary condition, it usually occurs after childbirth, but no substantial evidence has been found as to why it happens so.

Symptoms
Symptoms of Ewing's sarcoma may include:
1. Swelling and pain especially in the arms, legs, back, chest or pelvis
2. Swelling accompanied by joint immobility
3. A bone breaks having no apparent cause
4. Swelling which may or may not be accompanied by a warm, tingling sensation
5. Fever resulting from unknown causes
6. Lumps or bumps which do not subside over time
7. Abnormal weight loss
8. High levels of fatigue
9. Tumors which have spread over to the lungs may cause shortness of breath
10.Tumors spread over to the spine may cause weakness or even paralysis.

Because the symptoms of Ewing's sarcoma can hardly be distinguished from symptoms caused by other infections or injuries, an early diagnosis is absolutely necessary for a successive treatment.

Causes and Symptoms of Ewing's Sarcoma

Hydrocephalus is a condition that is also called  water on the brains . This condition is triggered in children when the cerebrospinal fluid (CPF) isn t drained completely from the brain. This fluid surrounds and protects the brain and the spinal cord and when it doesn t find an outlet, it accumulates in the brain.

Very young children with hydrocephalus have enlarged heads to accommodate all the excess water. But older children whose skull bones have solidified and cannot expand suffer terrible headaches. This condition requires immediate treatment or it could lead to damage to the brain.

What triggers Hydrocephalus? 

If there is an obstruction in the ventricles (the passages through which the CPF flows), the circulation of this fluid is affected. And this triggers hydrocephalus.

Hydrocephalus can be of two types-

Congenital Hydrocephalus:

This is a congenital condition, which means the baby is born with this ailment. It could be because there are abnormalities in the spine or it did not develop the way it should have or because the aqueduct that connects the ventricles of the brain is narrowed.

Acquired Hydrocephalus:

This condition can develop at any age. It is triggered by bleeding in the brain. It may happen if babies are born before the due date. Or a brain injury may prompt it. A tumour could also be behind hydrocephalus.

What are the Symptoms of Hydrocephalus?

Among babies, the biggest sign is the swollen head. Other symptoms may include-

Bulges along with the skull

The gap along with the bone plates of the skull

Swollen veins on the head

Eyes may bulge

Vomiting, nausea and loss of appetite.

Seizures

Drowsiness

squinting

Treatment of Hydrocephalus -

This condition requires immediate treatment or it might trigger problems of the nervous system. Here are some treatments that a child might have to undergo-

Shunt procedure -

A catheter is inserted into the brain to drain away the excess fluid. It is passed through the abdominal cavity and the bloodstream absorbs it.

Endoscopic surgery -

This surgery is performed on older children. A lighted stick with a camera is inserted by drilling a tiny hole into the third ventricle. This allows the accumulated fluids to flow out and past the blockages. This is a minimally invasive procedure.

The child is kept under meticulous observation after the surgery. Hydrocephalus is a dangerous ailment but with timely intervention, it can be cured completely.

What Triggers Hydrocephalus In Children?

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