Elbow, Wrist & Hand

What It Is

Guyon’s canal syndrome is caused by pressure on (entrapment of) the ulnar nerve as it passes through a small tunnel in the wrist called Guyon’s canal. When it happens in cyclists, it is often called handlebar palsy (Kopcik, 2023). Symptoms tend to begin with pins and needles or numbness in the little finger and ring finger, and can progress to weakness of the small muscles within the hand that are supplied by the ulnar nerve (Kopcik, 2023; Saran et al., 2025). The syndrome is often seen in people who cycle regularly, because of long periods of pressure from the handlebars on the wrist and the repeated vibration of long rides (Brown, Stainsby and Sovak, 2014; Kopcik, 2023).

Guyon’s Canal Syndrome Anatomy

Guyon’s canal syndrome is an uncommon form of nerve compression that affects the ulnar nerve as it passes through Guyon’s canal in the wrist (Kopcik, 2023). The ulnar nerve travels down the arm, passes behind the elbow and continues into the hand, where it supplies the ring and little fingers. In the wrist, the nerve and the ulnar artery run through the canal. The canal is bordered by two small wrist bones, the pisiform and the hook of the hamate, with a ligament forming its roof (Saran et al., 2025). As the nerve leaves the canal, it divides: one branch brings feeling to the little finger and part of the ring finger, and the other branch supplies muscles within the hand (Saran et al., 2025).

This condition is a lot less common than carpal tunnel syndrome (CTS), but it can be present at the same time as CTS. Because the ulnar nerve supplies feeling to the little finger and half of the ring finger, numbness in these fingers may suggest that the nerve is being compressed. The ulnar nerve can also be compressed at the elbow, so it’s important that a doctor works out where the problem is, with an examination and tests such as nerve studies or scans, before treatment begins (Kopcik, 2023).

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

Treatment

Self-Care & Treatment

How to Treat Guyon’s Canal Syndrome

Hands-on therapies such as physical therapy or massage therapy are sometimes used, but there is little research on which treatments work best (Brown, Stainsby and Sovak, 2014). I can help with gentle hands-on work for the forearm and hand, nerve glides, and changes to how you use and rest your wrist. See the My Approach tab for how I work.

1. Therapy and Rest

Treatment usually starts with non-surgical care, including rest (Kopcik, 2023). The most commonly recommended step is to avoid pressure on the wrist and to limit repetitive or sustained movements, such as bending the wrist back or leaning on the heel of the hand (Brown, Stainsby and Sovak, 2014). I can help you identify and change the activities that load your wrist. If non-surgical care doesn’t give you the results you need, your doctor may refer you to a surgeon.

2. Bike Set-up

There are lots of things to consider: the height of the saddle, the position, width and padding of the handlebars, and your body position. Having your bike fitted and seeking advice from a cycling coach or bike-fitting professional is important (Brown, Stainsby and Sovak, 2014; Kopcik, 2023).

3. Cycling Problems

Reduce the length of time you cycle for; long rides tend to make this problem worse (Kopcik, 2023).
Change your hand position on the handlebars regularly. In one study, pressure over the nerve was highest with the hands on the drops (the lower, curved part of road handlebars) (Brown, Stainsby and Sovak, 2014).
Wear padded cycling gloves, which reduce pressure on the palm; thin foam padding gave the biggest reduction in one study (Brown, Stainsby and Sovak, 2014).
Make sure your handlebars have appropriate padding to absorb some of the force.
Consider changing your gearing or your riding position (Kopcik, 2023).

Treatments you may want to discuss with your family doctor or nurse practitioner

Options outside my scope

Wrist splint: a splint that holds the wrist in a neutral position, often worn at night (Brown, Stainsby and Sovak, 2014).
Steroid injection: an injection of steroid medicine, sometimes used as part of non-surgical treatment (Kopcik, 2023).
Ganglion aspiration: if a ganglion cyst (a fluid-filled lump) is pressing on the nerve, a doctor may draw out the fluid with a needle, guided by an ultrasound scan (Saran et al., 2025).
Surgery: an operation to release the ligament forming the canal and relieve the pressure on the ulnar nerve; it is the final option when other treatments haven’t worked (Kopcik, 2023).

How I can help (see the My Approach tab)

Finding and changing what puts pressure on your wrist
Gentle hands-on work for the forearm and hand, and nerve glides
Working out whether a wrist splint would help and how to get one

Tips

Avoid overusing the wrist or putting undue pressure on the palm (Brown, Stainsby and Sovak, 2014).
Ganglion cysts are among the most common lumps that can press on the nerve in Guyon’s canal (Saran et al., 2025).
Take regular breaks, or reduce the time you spend on tasks that involve bending and turning the wrist or leaning on the heel of your hand.
See your family doctor or nurse practitioner if numbness or weakness in your hand doesn’t settle, as long-lasting pressure on the nerve that isn't properly managed can lead to lasting problems (Brown, Stainsby and Sovak, 2014).

Treatment

My Approach

Guyon's canal syndrome is usually driven by steady pressure on the heel of your hand, such as leaning on handlebars or repeated gripping. My aim is to take that pressure off, ease the muscles around the nerve and help it move freely, while making sure anything more serious is checked by a doctor.

Which Path Applies

If it's mild (pins and needles or numbness in your ring and little fingers, with no weakness), I can treat it directly, alongside any tests your family doctor or nurse practitioner arranges
If your grip is getting weaker, the small hand muscles look thinner, or the numbness is getting worse, see your family doctor or nurse practitioner first; once they've checked it, I support their plan
After surgery to release the canal, I need your surgeon's okay before hands-on treatment

I start by assessing your neck, elbow, forearm and wrist, with a nerve screen of feeling, reflexes and grip strength. The ulnar nerve can be squeezed in more than one place, so I check the whole route. I'll also ask about your cycling, work and hand positions.

Taking the Pressure Off

Finding where the heel of your hand is being leaned on, and adjusting hand position, grip and bike or desk set-up
Working out whether a wrist splint would help and how to get one; in some cases I'll point you to a doctor or physiotherapist to have one fitted

Hands-On Treatment and Exercise

Gentle work through the forearm, hand, elbow and neck, staying off direct pressure over the nerve and any lump at the wrist
A gentle ulnar nerve glide; it should bring on mild tingling at most, settling quickly
Grip and hand strength work as symptoms settle, and a gradual return to longer rides
After surgery, once you're cleared: scar work once it has healed, nerve glides and rebuilding grip strength

If numbness or weakness doesn't settle, see your family doctor or nurse practitioner (see Tips).

What to Expect

Typical Course

Typical course: If it's mild, most people come once or twice a week at first, then weekly, with a reassessment at about 4 to 6 weeks, then less often; symptoms usually ease over a few weeks once the pressure is off, though full recovery can take a few months. If you've needed medical care or surgery first, visits follow your medical team's plan, and getting strength and feeling back usually takes several months.

What I Focus On

Pressure Relief

Hand & Bike Set-Up

Nerve Glides

Neck-to-Wrist Check

Forearm & Hand Release

Sources

References

Brown, C.K., Stainsby, B. and Sovak, G. (2014) 'Guyon canal syndrome: lack of management in a case of unresolved handlebar palsy', Journal of the Canadian Chiropractic Association, 58(4), pp. 413–420.
Kopcik, K. (2023) 'Guyon canal syndrome and handlebar palsy – summary of available knowledge', Journal of Pre-Clinical and Clinical Research, 17(1), pp. 23–26. doi: 10.26444/jpccr/159709
Saran, S., Reddy, P.S., Shirodkar, K. et al. (2025) 'Unveiling Guyon's canal: insights into clinical anatomy, pathology, and imaging', Diagnostics, 15(5), 592. doi: 10.3390/diagnostics15050592

Massage therapy · Kitchener–WaterlooGuyon's Canal Syndrome

What It Is

Guyon’s Canal Syndrome Anatomy

Self-Care & Treatment

How to Treat Guyon’s Canal Syndrome

1. Therapy and Rest

2. Bike Set-up

3. Cycling Problems

Treatments you may want to discuss with your family doctor or nurse practitioner

Tips

My Approach

Which Path Applies

Taking the Pressure Off

Hands-On Treatment and Exercise

Typical Course

References

Related Conditions

Book a session

Massage therapy · Kitchener–WaterlooGuyon's Canal Syndrome

What It Is

Guyon’s Canal Syndrome Anatomy

Self-Care & Treatment

How to Treat Guyon’s Canal Syndrome

1. Therapy and Rest

2. Bike Set-up

3. Cycling Problems

Treatments you may want to discuss with your family doctor or nurse practitioner

Tips

My Approach

Which Path Applies

Taking the Pressure Off

Hands-On Treatment and Exercise

Typical Course

References

Related Conditions

Carpal Tunnel Syndrome

Cubital Tunnel Syndrome

Cyclist's Palsy

Posterior Interosseous Nerve Entrapment

Book a session