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!

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?

Uterine polyps are growths attached to the inner wall of the uterus that extend into the uterine cavity. Overgrowth of cells in the lining of the uterus (endometrium) leads to the formation of uterine polyps, also known as endometrial polyps. These polyps are usually noncancerous (benign), although some can be cancerous or can eventually turn into cancer (precancerous polyps).

Uterine polyps range in size from a few millimeters - no larger than a sesame seed - to several centimeters - golf-ball-size or larger. They attach to the uterine wall by a large base or a thin stalk.

You can have one or many uterine polyps. They usually stay contained within your uterus, but occasionally, they slip down through the opening of the uterus (cervix) into your vagina. Uterine polyps most commonly occur in women who are going through or have completed menopause, although younger women can get them, too.

Symptoms

Signs and symptoms of uterine polyps include:

Irregular menstrual bleeding - for example, having frequent, unpredictable periods of variable length and heaviness
Bleeding between menstrual periods
Excessively heavy menstrual periods
Vaginal bleeding after menopause
Infertility
Some women have only light bleeding or spotting; others are symptom-free.
When to see a doctor
Seek medical care if you have:

Vaginal bleeding after menopause
Bleeding between menstrual periods
Irregular menstrual bleeding
Causes

Hormonal factors appear to play a role. Uterine polyps are estrogen-sensitive, meaning they grow in response to circulating estrogen.

Risk factors

Risk factors for developing uterine polyps include:
Being perimenopausal or postmenopausal
Having high blood pressure (hypertension)
Being obese
Taking tamoxifen, a drug therapy for breast cancer
Complications

Uterine polyps might be associated with infertility. If you have uterine polyps and you're unable to have children, removal of the polyps might allow you to become pregnant, but the data are inconclusive.

Uterine Polyps - Symptoms, Causes & Complications Related To It! 

Rubbery cushions (discs) between the bones (vertebrae) stack up to form the spine. When a nerve between the disc and vertebrae is pressed and inflamed, that condition is called herniated disc. The herniated disc is also referred to as the ruptured disc or the slipped disc. This is caused when the soft jelly is pushed out due to a tear in the exterior. Herniated discs can lead to an irritation of the nerves and result in tremendous pain. It may also cause the arms and legs to become numb and weak. However, some people suffering from this condition may not display any symptoms at all.

Herniated disc generally occur in the lower part of the vertebral column. The herniated disc may also be seen in the thoracic spine or cervical spine. The symptoms of a herniated disc include pain in the legs, feet, or the buttocks, pain in the shoulder blade, tingling of the feet, numbness of the feet and hands, muscle weakness, neck pain or muscle spasm in the neck. Most common causes of herniated discs are aging, excessive weight or lifting of heavy weight.

Prevention of herniated disc

Herniated discs are very commonly found in people who are aged between 35 or 55 years. They are seen more commonly in the men in comparison to the women.
A herniated disc cannot be prevented easily, but there certain things that you can do to reduce the risks. Maintaining the proper techniques of lifting is important. You should not be bending at your waist. You should always bend the knees and keep the back straight. This helps you to use your leg muscles which are very strong to support the weight.
As the saying goes, precaution is better than cure, so here are few precautions that can be taken to avoid herniated discs. Practicing a proper posture can help in reducing the risk of a herniated disc. It is extremely important for an individual to maintain a healthy posture while standing, sitting, walking, and even sleeping. It is imperative that you stretch your muscles when you are sitting in one position for a long time.
Another important thing to avoid is high-heeled shoes, as they are few of the most common causes of a herniated disc. It would be a good idea to go for flat and well cushioned comfortable footwear as they can go a long way in reducing the risk of the herniated disc.
Exercising regularly can go a long way in keeping the muscles of the legs, stomach, and back very strong. You should try to balance your flexibility and strength by exercising regularly. The best form of exercise to avoid herniated disc or ruptured disc is aerobic exercise.
It is true that as you start to age, the chances of getting a herniated disc increase significantly. However, if proper precautions are taken, the stress put on the spine can be effectively reduced, thereby eliminating the risk of a herniated disc. 

Herniated Disc - Is There A Way It Can Be Prevented?

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

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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