Spinal fusion is a surgery in which two or more vertebrae in the vertebral column or back are fused or joined to treat a slew of spinal problems and diseases, which cause debilitating back pain. This surgery helps to remove bone and tissue that are narrowing the spinal canal, squeezing the spinal cord and nerves, reducing pain and improving function.

There are many different causes of back pain like injury, poor posture, age, osteoarthritis, herniation of disc between two vertebrae, degenerative disc disease, narrowing of spine called stenosis, and spondylosis or lessening of space between the vertebrae- most of these can be treated using spinal fusion.

All of these causes put tremendous pressure on the vertebrae and pinch spinal nerves that pass through the back and radiate out into the arms, legs and torso. Apart from the pain, patients experience nerve and muscle weakness and irreversible damage affecting normal life.

Spinal fusion started off as just a treatment for fractures but now it has become the surgery of choice for a number of spine problems. Though it can be done anywhere in the spine, it is very effective when done in the lower part of the spine called lumbar spinal fusion or arthrodesis.

Spinal fusion is done by forming a direct bony connection between the vertebrae surrounding the painful discs, the cushioning between the vertebrae. Pain is stopped by stopping the motion of the painful discs.

There are different methods of spinal fusion each with its own advantages and limitations.

Techniques include fusion approached from the front, the back, or both of the vertebral column. Sometimes surgeons decide to use intervertebral cages or metal screws to provide internal structural support while the bone fuses. These cages may be placed between the vertebrae and packed with bone graft material taken from the patient or constructed out of synthetic materials.

What to expect?
Spinal fusion is not a risk-free procedure. It is a major surgery lasting several hours and carrying a number of risks like-

Failure of the vertebral fusion and breaking of metal implants
The vertebrae above and below the fusion can wear away aggravating problems
Blood clots may be formed that can travel to lungs causing embolism
Injury to spinal nerves causing permanent weakness in legs and problem with bladder and bowel function
Infections and blood loss
Heart attack or stroke during surgery
The patient has to be kept in hospital for a couple of days for post-operative care after which he will have to undergo rehabilitation for months. Hence, one should really think before going for spinal fusion. And when it is recommended, seek a second opinion before making a decision. 

Spinal Fusion Surgery - What To Expect?

Spinal trauma, also referred to as spinal cord injury, occurs when a section of your spinal cord or the nerves at the edge of your spinal canal is damaged. The spinal cord acts as a messenger between the brain and other parts of your body. If the spine sustains an injury, all or some of these impulses may not get through. This may result in complete loss of mobility and sensation below the site of injury. An injury closer to the neck can cause paralysis throughout a larger part of the body than in the lower back region.

How do such injuries occur?

Often, spinal trauma or injury results from a violent event or an unpredictable accident. The following may severely damage your spinal cord-

  A violent attack (a gunshot or a stabbing)
  A motor vehicle accident that may cause trauma to the neck, back or head
  Falling from a great height
  Spinal or head injuries during some sports activity
  Electrical accidents

What are the signs of a spinal cord injury?

The followings signs and symptoms can be observed after an injury to the spinal cord-

  Difficulty walking
  Restricted movement of the legs and arms
  Stiffness, pressure and intense pain in the neck/back
  Loss of sensation
  Muscle spasms
  Loss of bowel or bladder control
  A twisted neck or back
  Lack of coordination, weakness or paralysis in any of the body part

When should you see a doctor?

If you experience significant trauma to the neck or head, accompanied by the above symptoms, then visit a doctor immediately. Spinal trauma or injuries is a debilitating condition and can deteriorate further if you do not seek medical intervention. In fact, if such an injury is not detected on time, you may have to face more severe complications. For instance, paralysis or numbness may develop immediately or gradually as blood clots and swelling occur in the surrounding region of the spine.

The doctor can detect spinal injuries using any of the following methods-

  CT Scan
  MRI
  X-ray

What is the treatment for spinal trauma?

An orthopaedic will recommend the correct treatment for spinal trauma or spinal cord injuries, depending on the severity of the condition.

  Medications - Intravenous medications can help reduce the pain and symptoms of acute spinal cord injury
  Immobilization - Braces, corsets, or neck collar can help realign and stabilize the spine
  Surgery - Surgery may be performed to remove bone fragments, herniated disks, foreign objects, or fractured vertebrae that are compressing the spine. Surgery also prevents deformity and pain in the long run.

Recovery starts typically within a week after the treatment. If you undergo surgery, you will have to wait a little longer to get back to your day-to-day activities. It is advisable that you follow up with your doctor and carry on physiotherapy for the first six months at least.

Spinal Trauma - When Should You Consult A Doctor?

Spine surgery is conventionally performed as  open surgery , which means the region being worked on is opened with a long entry point to permit the surgeon to view and access the area. Technical and scientific advances have permitted more back and neck conditions to be treated with a less obtrusive surgical technique. The minimal invasive spine surgery (MISS) does not include a long cut, and it prevents causing damage to the muscles around the spine. As a rule, this causes less pain after the surgery and a speedier and healthy recovery.

Spine surgery is normally suggested when non-surgical treatments like medicinal or exercise based methods have not helped in lessening the excruciating symptoms of your back problem. Moreover, surgery is just considered if your doctor can pinpoint the correct reason of your pain, for example, a herniated circle or spinal stenosis. 

MISS is also called less obtrusive spine surgery. In these procedures, surgeons utilise particular instruments to get to the spine through little cuts. The surgery process is as follows:

During the surgery, a little entry point is made and the tubular retractor is embedded through the skin.
It is also inserted into the delicate tissues down to the spinal cord.
This makes a passage to the little range where the problem exists in the spine.
The tubular retractor holds the muscles open and is set up all through the surgery.
The surgeon gets to the spine utilising the little instruments that fit through the focal point of the tubular retractor.
Any bone or disk material that is expelled goes out from the retractor.
Any gadgets needed for the fusion process, for example, screws or rods, are embedded through the retractor.
A few surgeries require more than one retractor.
Keeping in mind the end goal to see where to put the entry point and embed the retractor, the surgeon is guided by fluoroscopy.
This strategy shows ongoing X-ray pictures of the patient's spine on a screen throughout the surgery.
The surgeon additionally utilises a microscope to enlarge the view through the retractor.
Towards the end of the procedure, the tubular retractor is expelled and the muscles come back to their original position.
This restrains the muscle damage that is more ordinarily found in open surgeries.
It is very important to talk about these risks with your doctor before your surgery or procedure.

Infection: Antibiotics are consistently given to the patient some time before, during, and regularly after the surgery to reduce the danger of infections.
Bleeding: A specific measure of bleeding is normal; however, this is not commonly dangerous.
Pain in the grafted area: Some patients will encounter surgical pain at the bone joint site.
Recurring symptoms: A few patients may encounter a repeat of their side effects.
Pseudarthrosis: Patients who tend to smoke are more prone to pseudarthrosis. This is a condition wherein there is insufficient bone formation. In case that this happens, a minor surgery may be required.
Nerve damage: It is possible that the nerves or veins might be harmed during these operations. These complications are extremely uncommon.
Blood clots: Another complication is blood clots in the legs. This poses a threat because these clots can break off and settle in the lungs.

Minimally Invasive Spine Surgery - A Guide On What To Expect?

At some point in life most people experience acute pain in their lower back which is extremely painful. Pain in the spine causes a lot of discomfort and disruption in the life of an individual and hence, it is always better to get it checked on time. There are patients who even wonder when they should consult a neurosurgeon or a spine surgeon for their back pain. It is advisable that a physical examination is done by a primary care physician for low back pain before consulting a spine surgeon.

Why consult a Physical care Physician First?
The main reason to consult a primary care physician at first is that he would prescribe medications for severe lower back pain. The medications could include non-narcotic pain medications such as Ultram or non-steroidal anti-inflammatory drugs such as Motrin. The physician can even refer you to a chiropractor or for physical therapy to get relief from the back pain. Mechanical means are made use of by a chiropractor mainly to alleviate the back pain of the patient.

If the patient feels better with the physical therapy or the medications prescribed by the family doctor and is able to resume normal activities, then there is no need to see a spine surgeon. It is often recommended to take good care of the back and to exercise. A combination of ergonomics, regular stretching and improved everyday posture is beneficial as it reduces the chance of causing pain in the lower back. Exercise plays a very important role and it provides the possibility of reducing the pain.

Conservative Care for Treating Lower back Pain
It is best for patients to consult a conservative care specialist if after consulting a chiropractor they do not find any reduction in their pain and they do not want to undergo spine surgery. The conservative care specialists are well-trained in rehabilitation of musculoskeletal disorders and specialize in spine care. The role of the conservative care specialist is similar to a cardiologist who specializes in treating neurological disorders.

The specialist for spine care works along with the surgeon in a spine center to treat the lower back pain. The specialist is trained in diagnostic techniques and is capable of making use of a combination of diagnostic tests as well as injection techniques such as epidural steroid injections to diagnose the source of the lower back pain in a patient. They can even advise patients whether it is appropriate to consult a spine surgeon for surgery. Surgery is done to correct the anatomical conditions and it is performed only when non-surgical treatments are not successful in alleviating the pain of the patient.

When Is The Right Time To See A Spine Surgeon?

A broken bone or a fracture can be painful and it requires medical attention for the fracture to heal properly. Proper healing is necessary for the right alignment of the bone. A doctor chooses to either reduce or set the bone in terms of new alignment. The bone reduction can happen manually or surgically depending on the severity of the injury. A Surgical procedure known as the open reduction internal fixation is performed for serious fractures. It ensures that the all the broken pieces are fixed together and the injury can heal properly.
Post the fracture, the bone need to be immobilised for proper healing. This is generally achieved by imposing a cast. For fractures that are not severe in nature, a doctor might choose to impose a temporary cast so that simple motion can happen around the site of the injury. For serious fractures, a permanent cast is placed around the injury site. In the case of a shoulder injury, a patient is required to wear a sling so that the bones are immobilised.


Time Duration of a Therapy Session:
While the exact duration of physiotherapy can vary from individual to individual, it takes a minimum of 2-8 weeks for the fracture to completely heal. Certain fractures take more time to heal. The rate of healing also depends on the severity of the injury, pain threshold level of the patient, extent of work with the physiotherapist, the robustness of the physiotherapy program, extent of the injury of the soft tissue and certain other factors. Typically shoulder and neck injuries heal quicker than a fracture of the legs. The time duration of fracture healing also depends on the type of bone that has been affected.


Physiotherapy in a Hospital:
If the fracture happens in the ankle or leg, a physiotherapist might have to intervene in the hospital in order to teach patient about using assistive devices such as crutches and cane. Things that are taught during this time include using the device in order to climb stairs, right walking posture, getting into a car, taking the device off while sitting and such other techniques.


Physiotherapy at Home:
Physiotherapy can also happen from home if the doctor specifically instructs to do the same. This is typically done for people where the condition is too serious to go outside and get the physiotherapy done. Certain weight bearing restrictions are imposed around this time. The training remains the same as in the case with a hospital.


In the Clinic:
Once the patient becomes mobile enough, a doctor might suggest a patient go to a clinic to get the physiotherapy done. A physiotherapist evaluates certain things such as pain, range of motion, gait, flexibility etc. of the patient before suggesting a certain exercise plan. 




How Long Do You Need Physiotherapy Post-Fractures?

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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