Elbow, Wrist & Hand

What It Is

Intersection syndrome is a painful condition of the wrist and forearm. It is a swelling and inflammation of the tendons that cross over the back of the wrist (HealthLink BC, 2022). It can affect people who perform repeated actions of the wrist, such as canoeists, weight lifters or downhill skiers. Heavy shovelling or raking can also lead to the syndrome (HealthLink BC, 2022).

If you overuse the wrist tendons, the lining might end up becoming inflamed from the constant rubbing against the thumb muscles. As it becomes more inflamed and irritated, it thickens and swells. You will feel pain when moving the wrist because the swollen tendons will rub against the thumb muscles.

The syndrome usually develops in people whose activities involve repeatedly bending the wrist forwards and backwards (flexion and extension), for example in canoeing or skiing (Montechiarello et al., 2010). Skiers do this when planting their poles in the snow, and the same movement happens when pulling a rake against the ground.

Symptoms include pain and swelling above the back of the wrist (HealthLink BC, 2022). Sometimes you can feel a creaking or grating (called crepitus) when the wrist bends and straightens (Montechiarello et al., 2010).

Intersection Syndrome Anatomy

The pain from the syndrome is usually felt on the back of the forearm, on the thumb side, a short distance above the wrist. It is at this spot that two muscles connected to the thumb cross over the two underlying wrist tendons (Montechiarello et al., 2010). Those two muscles help to control the thumb. They begin in the forearm, cross over the tendons in the wrist and connect to the thumb. When they work, they pull the thumb back and out.

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

Treatment

Self-Care & Treatment

How to Treat Intersection Syndrome

I can help settle the pain with hands-on work for your forearm, help you change the movements that set it off, and build your wrist and forearm back up with exercise. See the My Approach tab for how I work.

1. Rest

It is important that you change or stop the activities that are causing you pain, and avoid stressful, repetitive wrist movements while the area settles (Montechiarello et al., 2010). Take regular breaks when performing any repetitive thumb and hand movements. Avoid grasping, wringing, twisting or turning movements of the wrist if you are doing them repeatedly.

If you are a downhill skier, you may find relief by avoiding heavy planting and dragging of the poles, for example by using a shorter pole or changing your grip.

2. Ice

Ice can help relieve pain and swelling (Montechiarello et al., 2010). Wrap an ice pack (or a bag of frozen vegetables) in a tea towel and apply it for up to 20 minutes every 2 to 3 hours (NHS, 2024). Never put ice directly on the skin.

3. Medicines to Reduce Swelling

HealthLink BC (2022) lists medicines to decrease swelling as part of the usual treatment for intersection syndrome. (This medicine information comes from HealthLink BC, not from me. Always check with a pharmacist or your family doctor or nurse practitioner before taking any medicine.)

4. Coaching

Get your technique analysed by a coach to make sure your biomechanics are good, and you are not placing too much strain on your hands and wrists.

5. Wrist Splint

Resting the wrist in a splint is one of the usual treatments for intersection syndrome (HealthLink BC, 2022). I can help you work out whether you need one and how to get it, and in some cases I'll refer you to a doctor or physiotherapist to have one fitted.

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

Options outside my scope

Steroid injection: an injection of a steroid medicine into the area is sometimes needed if the inflammation does not settle (HealthLink BC, 2022; Montechiarello et al., 2010).
Surgery: an operation is sometimes needed if other treatments have not worked (HealthLink BC, 2022; Montechiarello et al., 2010).

How I can help (see the My Approach tab)

Hands-on work for the forearm and wrist

Changing the movements that set it off

Exercises to rebuild wrist and grip strength

Advice on whether you need a splint

Tips

When doing any activities, try to maintain a healthy body and wrist alignment.
Limit the amount of activities you do requiring a repeated motion of the thumb and wrist.
Depending on what your current job or hobbies are, take care to prevent unnecessary injuries from happening.

Treatment

My Approach

Intersection syndrome comes from bending the wrist back and forth, over and over, more than the tendons can cope with: paddling, planting ski poles, raking, shovelling or lifting. My aim is to settle the irritation, change what's overloading it, and build your wrist and forearm back up so they cope with your work and sport again.

I start by asking about your work, sport and hobbies and what brings the pain on. Then I assess how your wrist, thumb and forearm move, where it's tender or swollen, and your grip strength, and check your elbow and shoulder too.

When It's Sore

Changing or cutting back the movement that sets it off, rather than stopping everything
No deep work or frictions on the swollen, painful spot; I work the forearm, elbow and shoulder above it instead
Gentle lymphatic drainage and keeping your arm raised to help with swelling
Cool applications in the clinic, and I'll show you how to use ice safely at home
Gentle, pain-free movement of the wrist and thumb so they don't stiffen
Help working out whether you need a wrist splint or support, and how to get one

As It Settles

Warm or contrast applications, then myofascial work and muscle stripping through the forearm
Cross-fibre work on tight spots once the area is no longer acutely sore, then a gentle stretch
Strengthening once the tenderness has gone: gentle holds, then light wrist and grip work, then slow lowering, always pain-free
Contrast baths, self-massage and a home programme between visits

Getting Back to It

Looking at your grip, technique and set-up, whether that's your paddle stroke, your pole plant, a garden tool or your wrist position on the bar
If you lift, gym-based progressions back up to your working weights
Regular breaks and varied tasks so the same movement isn't repeated for hours

If the pain or swelling isn't settling despite changing your activities, see your family doctor or nurse practitioner.

What to Expect

Typical Course

Typical course: Most people come once or twice a week at first, then weekly, with a reassessment at about 4 to 6 weeks, then less often as you manage more on your own. Many people find it settles over a few weeks once the movement that set it off is changed; if it has been going on for a long time, it can take longer.

What I Focus On

Activity Changes

Forearm Release

Swelling Control

Progressive Wrist Strength

Technique & Set-Up

Sources

References

Montechiarello, S. et al. (2010) 'The intersection syndrome: ultrasound findings and their diagnostic value', Journal of Ultrasound, 13(2), pp. 70-73. doi: 10.1016/j.jus.2010.07.009.
HealthLink BC (Healthwise Staff) (2022) Intersection syndrome. Available at: https://www.healthlinkbc.ca/healthwise/intersection-syndrome (Accessed: 7 October 2026).
NHS (2024) Sprains and strains. Available at: https://www.nhs.uk/conditions/sprains-and-strains/ (Accessed: 8 October 2026).

Massage therapy · Kitchener–WaterlooIntersection Syndrome

What It Is

Intersection Syndrome Anatomy

Self-Care & Treatment

How to Treat Intersection Syndrome

1. Rest

2. Ice

3. Medicines to Reduce Swelling

4. Coaching

5. Wrist Splint

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

Tips

My Approach

When It's Sore

As It Settles

Getting Back to It

Typical Course

References

Related Conditions

Book a session

Massage therapy · Kitchener–WaterlooIntersection Syndrome

What It Is

Intersection Syndrome Anatomy

Self-Care & Treatment

How to Treat Intersection Syndrome

1. Rest

2. Ice

3. Medicines to Reduce Swelling

4. Coaching

5. Wrist Splint

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

Tips

My Approach

When It's Sore

As It Settles

Getting Back to It

Typical Course

References

Related Conditions

Carpal Tunnel Syndrome

De Quervain's Tendonitis

Extensor Carpi Ulnaris Tendonitis (ECU)

Repetitive Strain Injury to the Thumb

Book a session