3. Opponens Pollicis
Origin: Flexor retinaculum, scaphoid tubercle, trapezium, and tendon of abductor pollicis longus
Insertion: Radial aspect of base of digit 1 proximal phalanx
Action: Opposes thumb with digit 5
Innervation: Median nerve (C8/T1)

Needling
Position: Various (sitting/supine)
Palpation: Palpate the thenar eminence and resist opposition to help isolate this muscle
Technique: Needle perpendicular to this muscle using digit 1 metacarpal as a bony backdrop
Caution: Low

Video 10.3 Needling opponens pollicis, original video by Nadine Crocker, CC BY-NC 4.0.