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Atlas · Forearm

Abductor Pollicis Longus

Dorsal radial wrist pain from trigger point referral near anatomical snuffbox region

Abductor Pollicis Longus
Body region
Forearm
Trigger points
1
documented in this muscle
Common symptoms
3
patterns cataloged
Common causes
4
contributory factors

Illustrated overview

Abductor Pollicis Longus · Anatomy 1

Anatomical view of the illustrated muscle.

Open full-size image

Trigger points

1. Abductor Pollicis Longus

Location. Back of forearm, thumb side

Trigger point map · Referred pain map
Abductor Pollicis Longus — Abductor Pollicis Longus · Referred-pain pattern 1Open full-size image

Regional muscle reference; this is not an individual map of the selected numbered trigger point.

Pain referral. Back of wrist, base of thumb

Pain Pattern

  • Back of wrist
  • Base of thumb
  • Posterior forearm

What This Pain Feels Like

A nagging pain at the base of the thumb and the thumb side of the wrist that worsens with any activity requiring thumb use — texting, opening jars, or gripping a steering wheel. The discomfort is often felt right at the anatomical snuffbox, making it easy to confuse with De Quervain's tenosynovitis or even a scaphoid fracture after a fall. A sustained pinch grip, such as holding a book open or using a smartphone one-handed, quickly intensifies the ache. Many people describe it as a deep soreness that lingers even after they stop using the thumb.

What Patients Report

  • Pain at back of wrist
  • Thumb base discomfort
  • Pain when moving thumb

What Makes It Worse

  • Thumb abduction
  • Typing
  • Tool use
  • Wrist movement
Browse related exercises (1)

Symptoms patients report

Wrist pain Dorsal radial wrist pain from trigger point referral near anatomical snuffbox region

Thumb base pain Pain at first carpometacarpal joint from abductor pollicis longus trigger point referral

Pain with thumb movement Thumb abduction directly loads compromised abductor pollicis longus trigger point fibers

Common causes

Repetitive thumb use Sustained or repeated thumb movements create cumulative abductor pollicis longus overload

Typing Spacebar and thumb key use creates repetitive thumb abduction loading on forearm muscles

Tool use Sustained tool gripping with thumb stabilization overloads abductor pollicis longus chronically

Sports Racket sports and grip-intensive activities overload thumb abductor mechanism repeatedly

Treatment & self-care

Immediate Relief

Comfortable thumb mobility

Support the hand with the wrist relaxed. Slowly move the thumb away from the palm and back within a comfortable range. Let the other hand guide the movement lightly if needed; do not pull into pain. This practices thumb mobility rather than specifically stretching abductor pollicis longus.

Duration
20-30 seconds per stretch, 3 repetitions
Frequency
4-5 times per day, especially after thumb-intensive activities
Expect
Goal: Comfortable thumb movement for reaching, pinching and handling objects

Immediate Relief

Gentle cross-friction massage at radial wrist

Locate the tender area on the thumb side of the wrist, just above the wrist crease in the anatomical snuffbox region. Using the index finger of the opposite hand, apply moderate pressure and rub across the tendon (perpendicular to its length) in short back-and-forth strokes. Work the area for 30-60 seconds, then rest. Repeat 3-4 times. The initial tenderness should decrease during the session.

Duration
3-5 minutes per session
Frequency
2 times per day
Expect
Goal: More comfortable finger movement and light gripping after local care

Caution If you recently fell on an outstretched hand and have tenderness in the anatomical snuffbox, seek medical evaluation for a possible scaphoid fracture before performing self-massage

Exercises

Thumb opposition exercises against each finger

Touch the tip of your thumb to the tip of each finger on the same hand, one at a time — index, middle, ring, then pinky. Press firmly enough to feel gentle resistance but not pain. Hold each contact for 2-3 seconds. Perform 10 complete cycles. To increase difficulty, wrap a rubber band around all five fingertips and open against the resistance.

Duration
3-4 minutes per session
Frequency
Morning and evening daily
Expect
Goal: Gradually build pinch strength and endurance for fine hand tasks

Exercises

Thumb spica splint during aggravating activities

Wear a thumb spica splint (available at pharmacies) that immobilizes the thumb and wrist while allowing finger movement. Use it during activities that aggravate the pain — gardening, prolonged typing, or repetitive gripping. Remove the splint periodically to perform gentle stretches and avoid stiffness from prolonged immobilization.

Duration
Wear during aggravating activities, remove for stretching every 1-2 hours
Frequency
As needed during symptomatic periods
Expect
Goal: Reduce demanding grip or pinch exposure while keeping comfortable hand activity

Caution Do not wear the splint continuously for more than a few hours without removing it for movement — prolonged immobilization can cause stiffness

Lifestyle Changes

Modify smartphone and mouse use

Switch to voice-to-text features on your phone to reduce thumb typing. Use your phone with both hands rather than one-handed thumb scrolling. For computer work, switch to an ergonomic vertical mouse or trackpad that reduces thumb strain. Take a 30-second thumb stretch break every 20 minutes during prolonged device use.

Duration
Ongoing modification
Frequency
Continuous during device use
Expect
Goal: Reduce demanding grip or pinch exposure while keeping comfortable hand activity

Professional Treatment

Professional evaluation for persistent radial wrist and thumb pain

If symptoms do not improve within 3-4 weeks of self-care, consult a hand therapist or orthopedic specialist. They can distinguish between abductor pollicis longus trigger points, De Quervain's tenosynovitis, thumb CMC joint arthritis, and scaphoid pathology. Treatment may include targeted manual therapy, ultrasound-guided corticosteroid injection for tendinitis, or a custom splinting program.

Duration
Initial evaluation: 30-45 minutes
Frequency
Follow-ups every 2-4 weeks as needed
Expect
Goal: Clarify persistent hand symptoms and plan care for the assessed muscle, tendon, joint or nerve findings

Differential diagnosis

  • De Quervain's tenosynovitis
  • Wrist sprain

Associated Trigger Points

Key Takeaways
  1. Dorsal radial wrist pain from trigger point referral near anatomical snuffbox region
  2. Pain at first carpometacarpal joint from abductor pollicis longus trigger point referral
  3. Thumb abduction directly loads compromised abductor pollicis longus trigger point fibers