CERVICAL INTERVERTEBRAL DISK DISEASE

For the treatment of a slipped disk in the neck
The most common cause of neck pain in the dog is injury to the spinal cord from a slipped (ruptured) disk in the neck. This injury can cause permanent problems with normal activity Generally, urgent treatment is required to reduce the risk of permanent disability.

DISK FUNCTION

The intervertebral disk of the dog acts as a cushion between the spinal bones (vertebrae) to absorb the shocks and movements of normal activity. The normal disk is like a “jelly doughnut” with a gelatinous centre and an outer ring of stronger fibrous tissue. In certain breeds of dog (Dachshund, Poodle, Beagle, Spaniel, Corgi), the disk degenerates at a very early age. As the dog ages, the jelly like component of the disk becomes more gritty and less resistant to pressure. The disk is then no longer able to cushion the spine and the contents of the centre may forcibly squirt out and bruise the spinal cord. Alternatively, the outer part of the disk may bulge up putting pressure on the spinal cord.

SYMPTOMS

Syleptoms typically develop, in order of severity, from neck pain to weakness and wobbliness then finally to unwillingness to stand depending on the speed or the amount of the disk rupture. In the most severe cases, dogs lose the ability to walk and become quadriplegic.

PROGNOSIS

The prognosis for recovery is mostly dependent on the severity of the damage to the spinal cord. The ability to walk before treatment is the key indicator for prognosis in dogs with a slipped disk in the neck.

DIAGNOSIS

A thorough neurologic examination is performed evaluating the head, all four limbs, and the spine. Pain can frequently be felt at the site of the affected disk. Anaesthesia and X-rays can help to show signs of narrowed disk spaces and degenerative disks. To confirm the diagnosis, a CT scan is recommended as this provides us with the best information on the spine. A special X-ray test called a myelogram can be helpful, in addition to a CT scan. Some dogs have an associated instability of the vertebrae that has contributed to the disk degenerating.

MEDICAL TREATMENT

Some dogs with only mild symptoms will respond to medical treatment. Generally this involves three or four weeks of strict confinement to a cage with the dog only allowed out to go to the toilet. Pain relief (cortisone or aspirin-like medication) is given at the same time but this does not mean the dog can be more active. Dogs that do not improve or get worse with medical treatment are candidates for surgery.

SURGERY

Dogs that have severe neck pain.or significant spinal cord damage are also candidates for surgery. The most common procedure is a ventral slot, which involves drilling a slot in the base of the vertebrae to relieve the spinal cord pressure and allow the delicate extraction of the disk material. Sometimes, the central portion of adjacent degenerative disks is removed to reduce the chance of further disk

rupture

For dogs with instability of the vertebrae, additional surgical stabilisation may be performed. This is done using metal plates and screws or bone cement.

RESULTS

Dogs that have retained the ability to walk prior to surgery have a 95% chance of complete recovery following surgery. Complete healing of the spinal cord can take up to six months to occur. Regular progress in spinal cord recovery is seen during this time. Dogs with unstable vertebrae have an increased risk of further instability developing later in life.

POSTOPERATIVE CARE

EXERCISE CONTROL

To allow the spine to heal following the surgery, complete restriction of exercise is necessary for the first 3 weeks. If your dog has had additional stabilisation then the exercise restriction should last 6 weeks. Your dog can be walked on a lead for toileting. A chest harness rather than a neck collar is recommended. Light (5-15 minutes) lead walks can begin during the final 2 weeks of the rest period.

BANDAGE AND SUTURE REMOVAL

A bandage is generally placed over the operated site for protection. This bandage should be removed 2-3 days after surgery. The skin stitches need to be removed 10-14 days following surgery. These tasks can be done by your regular vetorinarian. Please call our hospital if there is any swelling, discharge or redness around the stitchescushion the spine and the contents of the centre may forcibly squirt out and bruise the spinal cord. Alternatively, the outer part of the disk may bulge up putting pressure on the spinal cord.

BLADDER MANAGEMENT

Some dogs have lost the ability to control urination after surgery. If the bladder is not emptied completely, then infection can develop. You may need to assist your dog with urination With your dog lying or standing place your hands in a prayer-like" fashion behind the last ribs. Apply equal inward pressure and gently expel the urine. Several attempts may be

MEDICATION

Most dogs are sent home with medication for additional pain relief. Sometimes, antibiotics are also dispensed. Give the medications as prescribed. Further pain relief can be prescribed if necessary. Please let us know two days before suture removal if you think more medication is required or you may be charged an urgent fee.necessary to be successful.

PHYSIOTHERAPY

Physiotherapy is an important part of your dog's recovery. We strongly recommend consultation with a recognised animal physiotherapist Home-based physiotherapy should consist of a warm compress applied to the region of the stitches for 15 minutes followed by gentle massage of the muscles. This can be followed by gentle flexing and extending of the legs. After the spine has healed, your dog can begin more active physiotherapy with regular controlled exercise. Running without leash control is recommended for only short periods. Regular swimming is an excellent way of providing active exercise without spinal stress.

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