sydney neurosurgeon professor brian owler
What is a cervical laminectomy? Why is a cervical laminectomy performed? cervical laminectomy surgery Surgery FAQs

Cervical Laminectomy

What is the anatomy of the cervical spine?

The cervical spine is the upper part of the spinal column and is made up of seven vertebrae (C1–C7). These are the smallest vertebrae in the spine and support the weight of the head. The first vertebra, known as the atlas (C1), supports the skull, while the second vertebra, called the axis (C2), enables the head to rotate. Between most vertebrae are discs that cushion the spine and allow movement; however, there is no disc between C1 and C2.

Behind the vertebral bodies is a canal formed by a ring of bone that houses the spinal cord as it travels from the brain into the rest of the body. The spinal cord passes through this space and gives rise to nerve roots that exit the spine through openings known as intervertebral foramina. These nerve roots provide sensation and muscle control to the shoulders, arms, and parts of the upper back. The back of the vertebral ring is formed by the lamina and spinous processes, which act as attachment points for muscles and ligaments that support the head and neck.

Each disc in the cervical spine has two main parts: the annulus fibrosus, which is the tough outer layer of fibres, and the nucleus pulposus, the softer, gel-like centre that provides cushioning. Together, these structures allow flexibility, protect the spinal cord and nerves, and maintain stability of the neck during movement.
What is a cervical laminectomy

What is a cervical laminectomy?

A cervical laminectomy is a common operation performed on the cervical spine through a posterior approach (through the back of the neck) whereby part of the bone of the vertebrae called the lamina are removed to decompress the spinal cord and/or nerve root(s).

In some cases, small bone screws are also implanted in the posterior aspect of the neck to stabilise the cervical spine. This is called a lateral mass fusion.

Why is a cervical laminectomy performed?

Spinal cord compression

Symptomatic spinal cord compression

Cervical myelopathy is a spinal cord disease, often due to spinal cord compression which results in neurological changes such as clumsiness of the hands, weakness of the upper limbs and spasticity of the lower limbs. Patients often report difficulty using cutlery and doing up buttons. Eventually walking becomes unsteady and the patient may fall or stager. There are differing degrees of severity and this will influence the expectations and potential outcomes from surgery.

Asymptomatic spinal cord compression

Although the spinal cord may be compressed, some patients will have no symptoms, or they may have only neck pain. Surgery in this instance is controversial. Some surgeons always recommend surgery. However, the risks of surgery need to be balanced against the risks of future problems. The problems that may develop in the future include the development of myelopathy. This may happen gradually, but can also happen suddenly sometimes after very minor trauma, and be very severe. This is referred to as a central cord syndrome. After balancing their options, some patients will elect to proceed with surgery, while others favour a conservative approach.

Nerve Root Compression

Radiculopathy

This is a clinical condition usually due to compression of a nerve root. The nerve root is the start of a nerve as it exits from the spinal cord and spinal canal. It usually will join with other nerve roots outside of the spinal canal to form various peripheral nerves. Nerve roots normally supply sensation to an area of the body as well as supply various muscles to make them move. Radiculopathy is most commonly painful and the area in which the patient experiences pain will often indicate the nerve involved. In addition, there is often numbness and paraesthesia. Paraesthesia is commonly referred to as pins and needles. Again, these may indicate the nerve root that is affected. Finally, there may be weakness of a muscle or of a movement.

Nerve root compression causing radiculopathy is most commonly due to a disc protrusion or bony spurs (osteophytes). There are many other reasons for radiculopathy such as a synovial cyst for example.

In some instances, a cervical laminectomy may be adapted to decompress one or more nerve roots at the same time. A cervical laminectomy is not normally performed for nerve root compression alone, but rather when there is a combination of spinal cord and nerve root compression.

Related conditions to cervical laminectomy

What is a cervical laminectomy surgery?

A cervical laminectomy is performed under general anaesthesia with the patient positioned face down. An incision is made along the back of the neck, and muscles are gently moved aside to expose the lamina—the back part of the vertebra. The correct level is confirmed with x-ray before carefully removing bone and ligaments to decompress the spinal cord.

If a lateral mass fusion is also required, screws are inserted into the lateral masses of the vertebrae and connected with rods. Bone graft is then placed around the screws to promote fusion.

The wound is irrigated, checked for bleeding, and a drain is inserted as a precaution. It is then closed with dissolving sutures and covered with a dressing. The operation typically takes 1–2 hours depending on the patient and the underlying condition.

After surgery, the patient is woken and assessed for neurological function, then monitored overnight in a high dependency or intensive care unit. The drain is usually removed the following day.
What is a cervical laminectomy

What are the expectations after surgery?

The expectations for surgery will depend on the indication for surgery. However, almost all patients will have some common experiences. Patients are normally able to communicate and talk with their family within an hour or so of their surgery. The throat is often sore and some patients may experience discomfort on swallowing. This generally resolves within a few days, but occasionally will take longer. Patients are normally able to eat and drink.

The physiotherapists will help with exercises to assist in preventing neck stiffness. Patients are usually mobilised the day after surgery and would spend about 2 days in hospital. Some patients will leave hospital within 2 days while others will stay for up to one week depending on their speed of recovery. In most cases a cervical collar is not used after surgery.

Myelopathy

Patients with a myelopathy have variable rates of recovery. The main reason for surgery in these patients is to stop further deterioration. However, around 50% will experience some improvement while 40% will remain unchanged and 10% will continue to deteriorate. Patients that have milder symptoms to begin with normally have a better rate of recovery than those with very severe symptoms. The reason for this is that once the spinal cord is damaged it has limited capacity for recovery.

Radiculopathy

Pain is the most common symptom of radiculopathy and, in most cases, is the first symptom to improve; often immediately after the surgery. Pins and needles may take longer but tend to improve quickly. Numbness takes the longest period to recover, perhaps even over 12 months and some patients may not experience full recovery of numbness. Weakness has variable recovery depending on severity and duration before surgery. Some patients will experience recovery immediately while others may have persistent weakness despite the surgery. Normally, physiotherapy is required to treat weakness. Overall, about 90% of patients will experience significant improvement in pre-operative symptoms, while a further 10% will not improve as much as is hoped, and 1-2% percentage will be worse off in relation pain or some other problem. No guarantees can be given in relation to the surgery.

cervical laminectomy surgery FAQs

All surgery caries risk. There are risks common to all surgeries such as infection, bleeding, deep vein thrombosis (DVT), pulmonary embolism and those associated with a general anaesthetic.

Surgery around the spinal cord and nerve roots carries a small risk of neurological injury that may be temporary or permanent. This could range from at the worst, quadriplegia (inability to move the arms and legs), paraplegia, or weakness/ numbness involving part of an arm or leg. These risks are very rare.

A specific risk of a cervical laminectomy is however C5 radiculopathy. This is a well-recognised issue that may arise several days after surgery with pain and weakness involving the shoulder. It is thought to be due to a change in the position of the spinal cord following decompression which results in traction on the nerve root. It may occur even with what is a routine straight-forward procedure. It is most common temporary and resolves over weeks to months.

If a lateral mass fusion is performed, there is a risk of the bones not healing together as one, i.e., non-union / failure of fusion. This may result in neck pain and revision surgery. There is a risk of adjacent segment disease. As the spine is fused at the level(s) of the pathology, more stress is placed across the levels above and below the level of the fusion. This may accelerate changes at those levels and cause similar problems, sometimes requiring surgery.

This is not an exhaustive list of potential complications but this information provides an overview of the more common complications that patients may be exposed to.

The hospital stay is normally around 4 days in total but varies depending on the patient and their underlying condition. The day after the surgery the wound drain is removed and plain x-rays of the neck are obtained. During the hospital stay the patient receives daily physiotherapy. Patients will receive prophylactic subcutaneous heparin injections and are required to wear stockings to prevent DVTs.

After surgery, there is normally some discomfort and analgesia is provided. However, the amount of analgesia is required is usually small. Constipation is a common complaint after surgery and is usually due to analgesics. Patients should inform staff if this becomes an issue.

The wound is normally cleaned and the dressing changed each day. After discharge no dressing is required. You may shower and then pat the wound dry with a clean towel afterwards. While the wound may get wet, do not soak it in the bath or in a pool for at least 2 weeks after the surgery. Do not rub the wound. If there are any concerns such as excessive redness, pain or ooze then you should have your GP review the wound as the first step.

After discharge, it is advisable to rest for 2 weeks which should consist of normal daily activities. One should not sit in the one position for too long such as at a computer for more than 20 minutes at a time. Once you feel more confident then activities such as driving can resume. Normally one can drive after 2-4 weeks from the date of surgery. A return to work depends on the work environment. Those with sedentary jobs can usually begin to go back to work after 2 weeks. Those with more physical jobs should wait at least 6 weeks but it should be discussed with Prof Owler.

A post-operative appointment is normally arranged at 6 weeks post-surgery. The appointment is normally provided to the patient at the time of discharge from hospital. At that visit any concerns can be discussed and the wound will be checked.

There are few long-term restrictions after this surgery. Patients who undergo a cervical laminectomy are usually advised to avoid body contact sports such as rugby league and union as well as to avoid any activities where there may be undue strain on the neck.

For the first 2 weeks patients should not lift any significant weights. This can gradually be increased by 5 Kg every 2 weeks. By the post-operative visit at the 6 week point after surgery, patients should have been lifting < 10Kg. After this the limit, can be increased. There is a general lifting limit of 20Kg for most people but this may need to be varied depending on the patient’s occupation.

important information

Find out more Frequently Asked Questions related to surgery.
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