Minimally invasive spinal surgery is a quicker and safer alternative to open surgery. The spinal discs, vertebrae and nerves are present deep inside the body. A small incision is made and the surgical instruments and a camera is inserted which push aside the muscles and reach the problem area.

Which medical conditions can be addressed with minimally invasive spine surgery?

1. Degenerative Disc Disease (osteoarthritis of the spine)
2. Herniated Disc (the disc protrudes from its right place)
3. Spinal Tumours
4. Vertebral compression fractures (collapse of the vertebra)
5. Lumbar spinal stenosis (narrowing of the space near the spinal cord)
6. Scoliosis (the spine curves sideways)
7. Spinal infections
8. Spinal instability

What are the goals of minimally invasive spine surgery?

1. Decompression: this procedure eases the pressure being exerted on the spinal cord or the nerve roots. This pressure can be the cause of pinched nerves.
2. Stabilization: sometimes, a segment of the spinal cord that has come loose can be the source of pain. A stabilizations surgery fuses the segment to the rest of the structure.



The three most common methods of minimally invasive spine surgery are-

1. Tubular: it is also called  muscle splitting  surgery. A tubular retractor passes through the muscles of the back and reaches the spine.
2. Mini-open: it is a lot like open surgery but with fewer risks and blood loss. The possibility of post-operation infection goes down significantly.
3. Endoscopic: it is also called a keyhole surgery. A small camera is introduced through a small incision and guided to the spine. The camera gives an internal view of the spine to the doctors.

The three types of Minimally Invasive Spinal Surgery are-

1. Microdiscectomy: involves the removal of the intervertebral disc that is putting pressure on the spinal cord.
2. Foraminotomy: spinal conditions can lead to narrowed foramen (the area where the spinal nerve exits the spine). The aim of the surgery is to expand the foramen.
3. Microlaminectomy: this is yet another type of decompression surgery. The aim is to relieve pain caused pinched nerves or a segment of the bone pressing down on the nerves.

What are the benefits of minimally invasive spine surgery?

  Speedy and pain-free recovery after surgery
  A patient is discharged the same day
  Very little loss of blood
  Reduced chances of infection
  Less scarring because the operation is done through small incisions
  Less muscle damage

Are there any risks attached to minimally invasive spine surgery?

No surgery is free of risks or side effects. Some common problems in the aftermath of minimally invasive spine surgery are-

  Allergies
  Reaction to anaesthesia
  Blood clots
  Infections
  In rare cases stroke and paralysis.

Minimally invasive spinal surgery incorporates the latest advances in the world of technology. It is the relatively hassle-free procedure and convenient for both doctors and patients.

Minimally Invasive Spinal Surgery - A Safer Alternative To Open Surgery!

Ultra sound is commonly known as sonography. It is a process of reproducing ultrasound images of soft tissues of a particular body part and other organs on the computer screen with the help of the echoes of the sound waves produced by the transducer, a high-frequency generating instrument.
Ultra sound is commonly used during the different stages of pregnancy to denote the foetal health, the foetal sex, date of delivery, birth defects etc. However, in recent times, the ultra sound has also been associated with the diagnosis of other body parts such as the eyes, heart, gall bladder, liver, ovary, uterus, kidney, uterus, testicles, and ovaries. Ultra sound has also been useful in conducting biopsies for suspecting cancer patients, although not all of the cancers are detected by this imaging process. 3D & 4D ultrasound imaging are useful for looking at a particular body portion with much more precision and in slow motion respectively.

The advantages of ultra sound are:
1. The process of ultrasound imaging is a painless and a fast one. It does not require any insertion of needles or similar objects to denote the problems of the concerned body part.
2. The process is more convenient as compared to other similar imaging processes like MRI, mammogram and x-rays as they can capture images of the soft tissues, blood flow & cysts more clearly than the other processes.
3. The process is free of any harmful effects as there are no chances of exposure to radiation as compared to similar processes such as CT scans or X-rays.

Ultrasound - How it is Beneficial over Other Imaging Techniques?

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?

Many women develop uterine fibroids by the time they hit the age of 50 years and above. These are non-cancerous growths that may occur in the uterus. Most women go through severe bleeding and pain as well as discomfort as a result of these fibroids. Age, family history of the same condition, obesity or being overweight, eating habits and even ethnicity play a large role in deciding the risk of each individual patient. These fibroids can grow in the submucosal, intramural and subserosal areas.

Following are the common side effects of uterine fibroids:

    Frequent urination: Due to the pressure of the fibroids on the uterus, the patient may experience a constant feeling of fullness in the lower pelvic area of the body, which may lead to frequent filling of the bladder. This gives rise to frequent trips to the washroom for urination. 
    Heavy Bleeding: Severe bleeding is one of the most common causes of the presence of these kinds of fibroids. The patient may experience a lot of bleeding during menstrual periods, as well as pain and cramps the rest of the time. The periods will also be very painful when there are fibroids in the uterus or the uterine lining.
    Painful Intercourse: It is a well-known fact that any kind of infection or growth as well as sores and other such ailments can lead to vaginal dryness as well as pain during sexual intercourse. This is true for uterine fibroids as well, which can lead to severe pain during sexual activity. These fibroids can also give rise to pain in the lumbar or lower back region.
    Abdomen Swelling: The abdomen may go through significant swelling in such a condition and the patient may even look like she is pregnant. The growth can push the shape of the abdomen outwards and create a full feeling.
    Pregnancy Complications: The presence of uterine fibroids can give rise to several complications during pregnancy and even after child birth. One of the most common problems in this case is bleeding, followed by more severe outcomes like miscarriage. The women suffering from uterine fibroids are at greater risk of undergoing a caesarean section for the delivery of the baby. The baby may also be born breech and a premature delivery may take place. 
    Infertility: This is also a rare side effect of the uterine fibroids and is generally seen only in very severe cases. 
    Cancer: Only one in every 1000 cases might transform into malignant tumours. These uterine fibroids are generally known to be non-malignant. 

Any symptoms must be reported to a gynaecologist at the earliest to avoid any serious complications.

Common Side Effects of Uterine Fibroids

Lung cancer is the uncontrolled growth of abnormal cells in one or both lungs. These abnormal cells do not carry out the functions of normal lung cells and do not develop into healthy lung tissue. As they grow, the abnormal cells can form tumors and interfere with the functioning of the lung, which provides oxygen to the body via the blood.

Lung cancer is the most common cause of death due to cancer in both men and women throughout the world. According to the U.S. National Cancer Institute, approximately one out of every 14 men and women in the U.S. is diagnosed with cancer of the lung at some point in their lifetime. Lung cancer is predominantly a disease of the elderly; almost 70% of people diagnosed with lung cancer are over 65 years of age, while less than 3% of lung cancers occur in people under 45 years of age.

What Causes Lung Cancer?

The development of lung cancer is strongly associated with cigarette smoking, approximately 90% of lung cancers are attributable to use of tobacco. Pipe and cigar smoking can also cause lung cancer, but the risk is not as high as with cigarette smoking. Tobacco smoke contains more than 4,000 chemical compounds, many of which are cancer causing (carcinogens). Passive smoking, i.e. the inhalation of tobacco smoke by non-smokers who live or work with smokers, is also an established risk factor for the development of lung cancer.

Genetic susceptibility (i.e. family history) may play a role in the development of lung cancer. Other causes of lung cancer include air pollution (from vehicles, industry, and power generation) and inhalation of asbestos fibres (usually in the workplace).

Lung Cancer Symptoms

Early symptoms and signs of lung cancer

There may be no symptoms at the onset of the disease. When present, common symptoms of lung cancer may include:

Coughing: This includes a persistent cough that doesn't go away or changes to a chronic smoker's cough, such as more coughing or pain.
Coughing up blood: Coughing up blood or rust-colored sputum (spit or phlegm) should always be discussed with your doctor.
Breathing Difficulties: Shortness of breath, wheezing or noisy breathing (called stridor) may all be signs of lung cancer.
Loss of Appetite: Many cancers cause changes in appetite, which may lead to unintended weight loss.
Fatigue: It is common to feel weak or excessively tired.
Recurring infections: Recurring infections, like bronchitis or pneumonia, may be one of the signs of lung cancer.
Signs of advanced stages of lung cancer

Advanced stages of lung cancer are often characterized by the spread of cancer to distant sites in the body. This may affect the bones, liver or brain. As other parts of the body are affected, new lung cancer symptoms may develop, including:

Bone pain
Swelling of the face, arms or neck
Headaches, dizziness or limbs that become weak or numb
Jaundice
Lumps in the neck or collar-bone region
Treatment

Treatment for cancer involves a combination of surgery to remove cancer cells, chemotherapy and radiation therapy to kill cancer cells. Lung cancer is incurable unless complete surgical removal of the tumour cells can be achieved. Surgery is the most effective treatment for lung cancer, but only a few percentage of lung cancers are suitable for surgery i.e. Stage I and II NSCLC and cancer that has not spread beyond the lung.

Radiation therapy may be used for both NSCLC and SCLC and is a good option for people who are not suitable for surgery or who refuse surgery. Chemotherapy is used for both NSCLC and SCLC. Chemotherapy drugs may be given alone or in combination with surgery or radiation therapy. Chemotherapy is the treatment of first choice for SCLC since it has usually spread extensively in the body by the time it has been diagnosed.

Also used in the treatment of lung cancer are targeted therapies. These are drugs (gefitinib and erlotinib) or antibodies (cetuximab, bevacizumab) that block the growth and spread of cancer by interfering with specific molecules involved in tumor growth and progression. They are used in some patients with NSCLC that does not respond to standard chemotherapy.

Lung Cancer: Causes, Symptoms and Treatments

As life expectancy is increasing so is the incidence of vertebral body (VB) fractures now being the commonest fracture of the body. PVP is an established interventional technique in which bone cement is injected under local anaesthesia via a needle into a fractured VB with imaging guidance providing instant pain relief, increased bone strength, stability, decreasing analgesic medicines, increased mobility with improved quality of life and early return to work in days.

In this era of minimally access surgery replacing open surgeries, PVP is a novel procedure & should be in the first line of management in place of conservatism or major spine surgery for painful uncomplicated compression fracture spine.

Morbidity & consequences of spinal fracture:

Traumatic VB is a painful condition requiring bed rest restricting daily activities markedly
Left untreated it can cause DVT, increase osteoporosis, loss of VB height, respiratory & GI disturbances, emotional & social problems secondary to unremitting pain, loss of independence with high cost of rehabilitation.
High risk of primary or consequential damage to neural, bony or disc element
Increased wedging, deformity & increase incidence of adjacent VB
Chronic pain of altered spine mechanics
Uncomfortable braces & sleep disturbance because of pain & discomfort with its sequels.
Cost of surgery and hospital treatment
Cost of implants
Phobia of surgery
Prolonged recovery period & Extensive rehabilitation
Changed spinal mechanics & transition syndrome
Major surgery & anesthesia with its own complications
Results / Outcome

PVP is a novel procedure with high benefit to risk ratio, which is highly underutilized in relation to the high prevalence of the vertebral.
Different studies show an immediate pain relief in (85   90)% of patients with low complication rate ranging from (1-5)% depending upon the type of lesion.
PVP does augment height of VB but ideal would be kyphoplasty
Patient is either off medicine or on reduced doses.
Patient feels so well that he almost forgets if he had VB

Percutaneous Vertebroplasty (PVP) is an emerging interventional technique in which surgical polymethyl methacrylate bone cement is injected under local anaesthesia via a large bore needle into a vertebral body (VB) under imaging guidance providing increased bone strength, stability, pain relief, decreased analgesics, increased mobility with improved QOL and early return to work. Started in 1984 by Galibert PVP is done in host of indications.

Senile osteoporotic compression remains the commonest Indication. Other indications are Metastatic VB, Multiple myeloma VB, VB haemangioma, Vertebral osteonecrosis & for strengthening VB before major spinal surgery. The benefit has been extended to the traumatic stable uncomplicated VB compression (VCF) which is commoner in younger age group with active life profile and prime of their career where strict bed rest and acute or chronic pain are unacceptable and they are more demanding for proactive treatment approach so as to be back to work ASAP.

Discovering the fact that VB is the commonest of body, its incidence >the hip, it becomes imperative to take it more seriously. With increasing life-span there is more of aged osteoporotic population, more so due to sedentary indoor lifestyle and post menopausal osteoporosis. Diabetics, smokers & alcoholics are at higher risk of developing osteoporosis. I have seen such alcoholic patient developing six spine fractures in just three months time from a single fracture being on complete bed rest.

Quick fix of fracture spine makes patient walk back same day instead of bed rest of months together avoiding morbidity & mortality of prolonged bed rest, making bedridden patient walk, in a way bringing patient back to normal life.

In this era of MAS replacing open surgeries, PVP is a novel procedure & should be in the first line of management in place of conservatism or major spine surgery for painful uncomplicated compression.

Morbidity & consequenses of spinal 

Traumatic VB is a painful condition requiring bed rest restricting daily activities markedly.
Left untreated it can cause DVT, increase osteoporosis, loss of VB height, respiratory &
GI disturbances, emotional & social problems secondary to unremitting pain, loss of independence with high cost of rehabilitation.
High risk of primary or consequential damage to neural, bony or disc elements.
Increased wedging, deformity & increase incidence of adjacent VB
Chronic pain of altered spine mechanics.
Uncomfortable braces & sleep disturbance because of pain & discomfort with its sequels.
Morbidity and complication of spinal surgery 

Cost of surgery and hospital treatment
Cost of implants
Phobia of surgery
Prolonged recovery period & Extensive rehabilitation
Changed spinal mechanics & transition syndrome
Major surgery & anesthesia with its own complications
Preparation & Procedure:
X-ray spine in a/p & lat view. CT is more informative of bone & morphology. MRI is good for soft tissue injuries. Ask for pedicle size in all dimensions and construct a 3D image aiming needle placement and cement filling in scan room itself as rehearsal of PVP. This reduces operative time & gives better results. Conventionally PVP is done by hammering the vertebroplasty needle through the bone. Here we use light weight drill to bore through the vertebra. It is important to set the needle at exact entry site & side with right trajectory aiming the defects.

In lateral view needle should go through middle of the pedicle going up to anterior 1/3 of VB. In P/A view the needle can be in midline or paramedian depending upon & if uni/bipedicular approach is planned. Approach varies as per location of vertebra, anterolateral in cervical, costotransverse/parapedicular in thoracic & transpedicular in lumbar vertebra.

Do bone biopsy if there is any doubt about lession. Do dye test (vertebral venography). Make cement more radiopaque by adding barium /or tungsten. Inject cement with 1or2 ml luerlock syringes strictly under fluoroscope in lateral view & cross checking in P/A view. Stop injecting either there is adequate filling or at the first sight of ectopic cement leak. Keep sample cement to see for hardening. Remove needle with rotational movement before cement hardens.

Pain relief is by virtue of different mechanisms postulated :

Cementing of fragments.
Thermal neurolysis of VB nerve ending due to heat of polymerization.
Washing away of nociceptor chemicals.
Neurolytic action of liquid monomer.
By allowing early ambulation decreasing pains of immobility & bed rest.
Complications 

PVP is generally safe with low risk.
Ectopic cement leak is frequent but generally inconsequential.
Outcome 

PVP is a novel procedure with high benefit to risk ratio, which is highly underutilized in relation to the high prevalence of the vertebral
Different studies show an immediate pain relief in (85   90)% of patients with low complication rate ranging from (1-5)% depending upon the type of lesion.
PVP does augment height of VB but ideal would be kyphoplasty.
Patient is either off medicine or on reduced doses.
Patient feels so well that he almost forgets if he had VB

Vertebroplasty (PVP) / Kyphoplasty - Approach To Management Of Vertebral Body Fractures!

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