Oliver Bee RMTRegistered Massage Therapist

Massage therapy · Kitchener–WaterlooSpondylolisthesis

Low Back & Pelvis

What It Is

Spondylolisthesis is a condition where one of the bones of the spine (a vertebra) slips forward compared with the vertebra below it. It can happen anywhere along the spine but is most common in the lower back (NHS, 2026). A backward slip is called retrolisthesis and is usually described as a separate condition. Spondylolisthesis can narrow the spinal canal or press on the nerve roots that leave the spine in that area.

Spondylolisthesis can cause low back pain, pain spreading to the bottom or thighs, tight hamstrings, or pain and tingling down one leg (sciatica). However, in many cases it causes no symptoms (NHS, 2026). Sometimes the person will report a previous injury to the spine during sport or a hobby.

Spondylolisthesis Anatomy

Vertebrae are the blocks of bone in your spine. They are separated by discs and linked by small facet joints. At the back of each vertebra is a narrow bridge of bone called the pars interarticularis (the pars), which connects the upper and lower facet joints (AAOS, n.d.). The pars can crack (a stress fracture), and the vertebra can then slip forwards.

Causes of Spondylolisthesis

Spondylolisthesis can happen as you get older, because the bones of the spine can weaken with age, and it can run in families (NHS, 2026). It can also be caused by a stress fracture, which is more common in young athletes and gymnasts (NHS, 2026). Sports that involve repeated over-arching (hyperextension) of the lower back, such as gymnastics, football and weightlifting, increase the risk (AAOS, n.d.). Sometimes there is no obvious reason.

A doctor will usually arrange an X-ray, which can show whether a vertebra has slipped forward and by how much. An MRI scan may be used if you have pain, numbness or weakness in your legs (NHS, 2026; AAOS, n.d.). If the slip is large, I may be able to feel a small step in your spine, but this is not a reliable way to diagnose it.

Not a diagnosis — for more information, contact me or another trusted healthcare provider.

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At Fearless Heart, 25 Dupont St E in Uptown Waterloo, or as a home visit across Kitchener–Waterloo.