High percentage of chronic back pain is due to spinal stenosis. The clinical picture is of 'neurogenic claudication' which effects postural balance and stability. If conservative treatment fail to improve symptoms, an invasive treatment which includes spinal decompression can be done.

The research is an observational prospective one, pre and post operational intervention. The aim is to examine whether an operational intervention improves quality of life, pain, postural balance an stability among patients.

It's important to clarify, that although there is operational intervention, the research is observational. The decision weather to operate or not, is not a part of the research. The investigators assume that since there is a population that independently going through an operation, the investigators can observe this population and evaluate different aspects of the operation outcomes.

Inclusion Criteria:

• Patients suffering from back or neck pain
• Patients that are candidates for operational intervention

Exclusion Criteria:

• Pregnant women
• Patients who had a spinal operation in the past.

80 patients, men and women above 18, which suffer from back or neck pain and are candidates for an operational intervention.