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Narrowing of the spinal canal is a common cause of leg pain and difficulty walking in older adults. It usually develops slowly and can be treated.
Spinal stenosis means the canal that carries the nerves has become narrow. It is usually caused by wear with age: thickened ligaments, enlarged joints and bulging discs gradually crowd the nerves.
It is most common in the lower back (lumbar stenosis) and also occurs in the neck.
Surgery is considered when walking is seriously limited, when symptoms keep worsening, or when weakness develops.
The operation is a decompression: the bone and ligament pressing on the nerves are removed to make room. In suitable patients it is done endoscopically or through a small incision. Screws and rods (a fusion) are added only when the spine is unstable.
Most patients are walking the same day or the next and stay in hospital for a short time. Walking distance usually improves over the following weeks.
All surgery carries risks, including infection, bleeding and nerve injury. Dr Mba will explain the risks and benefits that apply to you before any decision is made.
It usually progresses slowly. It becomes urgent only if bladder or bowel control is affected or weakness develops quickly.
Symptoms can stay stable or fluctuate, but the narrowing itself does not reverse.
Age alone is not a barrier. Your general health matters more, and less invasive techniques have made surgery possible for more patients.
This page gives general information and does not replace a consultation.
Reviewed by Dr Serge Eddy Mba, Spine Neurosurgeon
Specialist brain and spine surgery in Harare and Gweru.
Mon to Fri 07:00 to 18:00
Emergencies after hours and at weekends
Avondale: 8 Angus Close
Borrowdale: 4 Borrowdale Lane
Gweru: Midlands Private Hospital