Oliver Bee RMTRegistered Massage Therapist

Massage therapy · Kitchener–WaterlooDe Quervain's Tendonitis

Elbow, Wrist & Hand

What It Is

Line drawing of the back of the hand and wrist, showing the tendons passing in separate channels under a band across the wrist, with the thumb tendons running along the thumb side.
The thumb's tendons share a tight channel at the edge of the wrist — when they thicken, that's where it hurts.

Sometimes known as De Quervain's tenosynovitis, this condition happens when the tendons at the base of the thumb become irritated and squeezed inside the narrow tunnel they pass through at the wrist (AAOS, n.d.). Tendonitis refers to tendons that are swollen and inflamed. When the tendons and their covering become thickened, they can cause tenderness and pain along the thumb side of the wrist. This tends to be more noticeable when making a fist, gripping or grasping something, or turning your wrist (AAOS, n.d.).

De Quervain's Tendinitis Anatomy

Two of the main tendons that run to your thumb pass through a tunnel on the thumb side of your wrist. Tendons are rope-like structures that attach muscles to bones. These tendons are covered with a slippery layer of soft tissue (synovium), which lets them slide easily through the tunnel. In De Quervain's, the tendons become irritated and their covering (sheath) thickens, so the tendons no longer glide freely inside the tunnel. This causes friction and pain with certain thumb and wrist movements (AAOS, n.d.).

The symptom most people report is pain on the thumb side of the wrist. The exact cause is not fully understood, and it often appears without an obvious cause (AAOS, n.d.; BSSH, n.d.). Thumb and wrist movements such as typing, texting or lifting can make it worse (AAOS, n.d.). It is more common in women, in people in their 40s and 50s, and in people with rheumatoid arthritis, and it is linked with pregnancy and the period after having a baby (AAOS, n.d.). Mothers of small babies seem particularly prone to it (BSSH, n.d.).

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.