Also called: Lumbar canal stenosis; neurogenic claudication
Exercise strongly helps
Strength
Stretch
Leg pain, heaviness or weakness that comes on with walking and eases the moment you sit or lean forward. The canal has narrowed, and extension narrows it further - which is why a shopping trolley makes walking possible again.
How common: ~11% of older adults; the commonest reason for spine surgery over 65
What it is
Lumbar spinal stenosis is narrowing of the canal that carries the nerves, usually from a combination of thickened ligament, bulging discs and enlarged facet joints. The narrowing compresses the nerves when the space is at its smallest.
The space changes with position. Extension - standing upright and walking - narrows the canal; flexion - sitting, bending forward, leaning on a trolley - opens it. That is why the symptoms are so positional, and why someone who cannot walk two hundred metres upright can cycle for an hour bent forward without trouble.
What it feels like
- Aching, heaviness or pins and needles in both legs coming on after a certain walking distance
- Relieved by sitting down or leaning forward, within a minute or two
- Better walking uphill or pushing a trolley, worse walking downhill or standing still
- Back pain that may be mild compared with the leg symptoms
- Symptoms usually in both legs, though often worse on one side
What causes it
Most people have more than one of these at once, and they feed each other. Read the
list looking for the two or three that sound like your week rather than for the one
true answer — the ones that describe you are the ones worth acting on.
- Thickened ligamentum flavum
- The ligament running along the back of the canal thickens with age and buckles inward when the spine extends. It is one of the largest contributors to the narrowing and to its positional nature.
- Facet joint enlargement
- The small joints at the back of each segment enlarge with degenerative change, encroaching on the canal and on the exits where nerve roots leave.
- Disc bulging and height loss
- Discs lose height and bulge backward with age, reducing the space available from the front. Combined with the changes behind, the canal narrows from both directions.
- Extension closing the canal further
- Standing and walking put the lumbar spine into relative extension, which reduces the canal diameter by a measurable amount. This is why the symptoms are activity- and position-dependent rather than constant.
- Age
- Almost all of the above are age-related, which is why stenosis is predominantly a condition of people over sixty. It is now the commonest reason for spinal surgery in older adults.
- Spondylolisthesis
- A vertebra that has slipped forward on the one below reduces the canal diameter directly and is a common accompaniment, particularly in older women.
- Congenitally narrow canal
- Some people start with less room, so the same degenerative changes produce symptoms earlier and more severely.
- Deconditioning of the trunk and hips
- Weak trunk and hip muscles mean the spine works closer to end range and with less control. It does not cause the narrowing but it worsens the functional consequence considerably.
- Reduced walking tolerance producing further decline
- Walking less to avoid symptoms produces deconditioning and weight gain, both of which worsen tolerance further. It is the main loop worth interrupting.
Who tends to get it
- Adults over sixty, in whom it is common
- Anyone with long-standing degenerative change in the lumbar spine
- People with a spondylolisthesis
- Those with a congenitally narrow canal, often diagnosed earlier than expected
- Anyone whose walking tolerance has been falling over months to years
What makes it worse, and what settles it
Makes it worse
- Standing still for long periods, which is often worse than walking
- Walking downhill, which increases lumbar extension
- Extension-based exercises and lying flat on the front
- Reducing activity entirely, which accelerates the deconditioning loop
- Weight gain, which increases lumbar lordosis and load
Settles it
- Flexion-based exercise - cycling, using a recumbent bike, walking with a trolley or poles
- Trunk and hip strengthening, which improves walking tolerance meaningfully
- Hip flexor stretching, since tight hip flexors increase lumbar extension while walking
- Interval walking - walking to just before symptoms, sitting briefly, repeating - which builds total distance
- Weight management, which reduces the load and the lordosis
What actually helps
The short version: Narrowed canal compresses the cauda equina; symptoms come on with walking and extension, ease with sitting and flexion
Strength work: Core: Transverse Abdominis; Glutes: Max; Legs: Quads
Stretching: Flexion bias helps - knees to chest, seated flexion; Hips: Flexors; AVOID sustained extension
Massage: Back: QL; Glutes
Also worth doing: Cycling or inclined treadmill (flexed positions) for cardio; walking with a stick or trolley
What the evidence says: Exercise and manual therapy match surgery for mild-to-moderate cases at 2 years. Direction of preference is the whole game - flexion for stenosis, often extension for disc.
The names above are the Targets qFIT tracks —
the Muscle Guide explains what each one does, and
Quick Add switches on the Exercises you
already have.
The qFIT routine for this
Ready-made routineBack Pain/Bulletproofing
qFIT already has this one built. It runs massage first, then stretching, then
strength — the order that works on a body that is already sore — and every
activity in it carries the reason it is there.
The button below opens your Checklist with this routine already selected, so instead
of your whole list you land on just its Categories, Targets
and Exercises, each with its checkbox, ready to tick as you work through
them.
Have more than one problem? Tick yours under My Problems on
My Profile and your Checklist's Routine list gains
Recommended for my problems — every routine for the problems you picked, merged
into one. Your picks stay private; that filter is the only thing they feed.
Get it checked if…
Bowel or bladder change or saddle numbness = cauda equina, EMERGENCY; progressive leg weakness needs urgent review
And whatever the body part: chest pain or unusual breathlessness on
exertion; a fever alongside the pain; unexplained weight loss; pain that is constant and
unrelated to how you move; new numbness, weakness or loss of bladder or bowel control; or
one calf that is swollen, warm and painful. Any of those, stop and get assessed.
How it usually goes
Conservative management improves walking distance and symptoms in a substantial proportion of people over three to six months, and stenosis often follows a stable rather than relentlessly progressive course. Surgery is effective for those who do not improve and whose walking distance is severely limited, and going into it stronger produces better outcomes. Progressive leg weakness, saddle numbness or any change in bladder or bowel control is cauda equina compression and needs same-day emergency assessment.
Prevalence basis: Imaging and symptom-based cohorts
Others the same routine covers
These share the Back Pain/Bulletproofing routine, so the work is the same. If one of them also
sounds like you, that is a reason to expect more from it, not less.
This is general information, not a diagnosis, and it cannot examine you.
If it matches you, use it to ask better questions of a clinician rather than to replace one.