Endoscopy refers to inserting microscopic cameras into the body through tiny incisions which throw up pictures of the inside of the body onto a screen. Endoscopy has been used for diagnostic purposes since the 1970s. Endoscopy for surgery has become popular from the 1990s.

Endoscopic spine surgery is a state-of-the-art surgery technique which involves micro incisions and minute tubes that cause almost no damage to surrounding tissues and muscles. It is a minimally invasive surgery and it is also called a pinhole surgery.

What are the advantages of endoscopic pinhole spine surgery?

There are a lot of reasons why doctors opt for an endoscopic surgery-

  It is also called Minimally Invasive Spine Surgery (MISS) because it causes little blood loss
  Recovery is almost immediate. A person can resume everyday activities within a week
  Very little pain around the surgery region so minimum pain medication is needed.
  No muscle or bone is removed.
  Since screws and rods are not used, full mobility of the spine can be restored
  The wounds are minute and do not usually require stitches and thus no ugly scars are left after the wounds heal.

What are the characteristics of an endoscopic spine surgery?

  The surgery is performed under local anaesthesia
  The person is discharged within 24 hours of the surgery
  The incisions that are made are microscopic

What are the different types of endoscopic surgery?

Endoscopic discectomy:
It is the least invasive of all spinal surgeries. It is used for treating herniated discs. Endoscopy reveals images of the spine. Through the same tunnel, surgery tools are inserted and the bulging or herniated disc is pulled out with a grasper. The wound does not always require stitches to close it.

Endoscopic Laminotomy:
This a substitute for open laminotomy. The camera helps locate exactly where the target area is. Then an incision is made below and above the lamina to relieve the pressure compressing the nerve.

Endoscopic facet rhizotomy:
With microscopic cameras, the nerves causing pain are identified and then the laser is used to numb these nerves which relieve pain. This type of surgery can also remedy a previously botched spinal surgery, facet joint arthritis or facet joint pain

Endoscopic foraminotomy:
This type of surgery again uses microscopic surgical tools guided by a tiny camera to enlarge a narrowed neuro of spinal nerve root canal to give it more room to move about without being compressed.

Endoscopic Spine Surgery & Pinhole Technique!

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?

Spinal fractures are extremely painful and usually happen when an external force applied to the spine exceeds the vertebral column s ability to bear the load. Many times, the bone fragments pinch and damage the spinal cord, which leads to an injury or dislocation of the bony vertebra. Although spinal fractures can develop anywhere along the spine, the most common site is the lower back.

What causes spinal fractures?

Spinal fractures can occur due to both minor trauma/falls and major accidents. The following are the probable causes of such fractures-

  Injuries sustained while playing a sport
  A traumatic injury
  Spinal instability
  Injuries sustained after falling from a height
  A whiplash
  Injuries sustained in an accident
  An underlying condition such as Osteoporosis, which causes the spinal bones to weaken

Symptoms observed:

Spinal fractures are characterized by the following symptoms-

  Muscle spasm and swelling
  Numbness
  Acute pain that worsens when you walk or stand for a long time
  A tingling sensation
  Restricted mobility of the spinal column
  Spinal deformity/disability
  Sudden onset of pain in the lower back region

What are the various types of spinal fractures?

Spinal fractures primarily fall into four categories, namely the following-

  Compression - Compression fractures are quite common in people with osteoporosis or bone cancer. The bones become fragile and brittle. If sudden force is applied with extreme pressure, the vertebra may not be able to support the load and that may result in a fracture.

  Burst - Severe trauma, such as a car accident can cause burst fractures. The external pressure is so much that the vertebra gets crushed. As a result, the bony fragments spread out and cause spinal cord injury. Unlike a compression fracture, where only a part of the vertebra is damaged, a burst fracture leads to multiple fractures in the vertebra.

  Flexion-distraction - This type of fracture is likely to happen if you are involved in a car accident. Normally, the spine is made to flex forward. However, a sudden jerk that pushes your body forward can put a lot of pressure on the spine and cause the vertebrae to break.

  Fracture-dislocation - This debilitating condition results from a torn ligament and broken bone.

What is the treatment for spinal fractures?

Treatment options for spinal fractures include both non-surgical and surgical methods.

  Non-surgical treatment - Most cases of spinal fractures can be treated with immobilization in a corset or brace for up to 10-12 weeks. Bracing will help prevent deformity and reduce pain.

  Surgical treatment - The doctor may recommend surgery in severe cases. The two standard surgical procedures are-

Vertebroplasty - The surgeon will insert a tube, known as a catheter, into the compressed vertebra. Through the catheter, he/she will inject bone cement into the fracture site. This will harden and stabilize the vertebral column. Vertebroplasty has proved to be an effective procedure to reduce pain. The surgery restores mobility and prevents loss of bone due to bed rest.

Kyphoplasty - During this procedure, the surgeon inserts a catheter into the spinal column under the guidance of an X-ray. Next, he/she makes small incisions along the back and inserts an inflatable bone stamp. The tamp, once inflated, bring back the vertebral body to its original height. It also creates a cavity to be filled with bone cement, which seals the cracks. The bone cement stops the vertebra from collapsing again. After the whole procedure, the surgeon will remove the catheter and stitch the incisions.

Following surgery, you will need to wear a brace for about 6-12 weeks. Physical therapy is strongly recommended initially to help you get back to your daily activities in a week or two.

Spinal Fractures - All You Should Know!

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!

Fractures are simply a break in a bone. They can be caused due to injury, (traumatic fractures) or a pre-existing condition like osteoporosis that causes weakening of bones (pathologic fractures). There are many ways to classify fractures. All fractures fall into the major categories of simple and compound fractures. Simple fractures are fractures where bones remain inside the skin and don t jut out. They are also called closed fractures.

Compound fractures, also called open fractures, are broken bones that penetrate through the skin. These types expose the bone and deep tissues to the environment. Compound fractures are more serious of the two. The healing here may be affected due to deep infections for which antibiotics need to be used. There are many different sub types of fractures and we re only going to skim through them here.

Comminuted fractures: Severe fractures in which a bone breaks into several smaller pieces.
Avulsion fractures: A small piece of bone is completely torn off from the main bone due to fierce pulling off a part of the body.
Other types of fractures are characterised by the many different angles the bone breaks into like transverse, oblique and spiral fractures.

Diagnosis
When a bone is broken there are symptoms like swelling that doesn t subside on its own and pain. In such a case it s imperative that one goes to a doctor for a diagnosis. Doctors can usually recognise most fractures by examining the injury and taking an X-ray. The X-ray also provides a clear idea about the type of fracture and the degree of displacement of the bone. And, it s important that the patient doesn t wait too long before approaching a doctor. This is because bones begin to heal very quickly after a fracture and the bone tissue will heal using any tissue available. This can lead to a misalignment of broken pieces of bone and cause disability and loss of function.

There are cases when X-ray may not show a fracture. This is especially common in fractures in the hip and wrist in older people. For diagnosing these, doctors will get some other tests done such as a computed tomography (CT) scan, magnetic resonance imaging (MRI), or a bone scan.

Treatments
Fractures have to be treated by doctors. The doctors set the fractured bones in their proper place and hold them there so that they can heal. Setting a bone is called "reduction." Reduction without surgery is called "closed reduction." But if the fracture is serious, it s going to require surgery with bone repositioning, called open reduction.

In extreme cases, pins, plates, screws, rods, or glue are used to hold the fractured bones in place, inside the body. Once the bone abutment has been treated, the bone is immobilised to allow the broken pieces to heal. In most cases, the fractured part is set in a rigid cast. The fractured ends of the bone can be fixed into place using metal pins connected to an external frame. This is removed after the bone has healed.

Fractures - How To Diagnose Them?

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?

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