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Opponens Pollicis Anatomy: Origin, Insertion, Action
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Muscle Anatomy of the Opponens Pollicis
Origin: Distal border of the flexor retinaculum and the trapezium
Insertion: Lateral aspect of the first metacarpal
Actions: Adducts the thumb into opposition
Innervation: Median nerve (C8, T1)
Blood Supply: Superficial palmar branches of the radial artery
Muscle Anatomy: Opponens Pollicis Actions
Primary Actions of the Opponens Pollicis
1. Opposition of the thumb toward the digits
Agonists:
- Abductor Pollicis Brevis
- Adductor Pollicis
- Flexor Pollicis Brevis
Antagonists:
- Extensor Pollicis Longus
- Extensor Pollicis Brevis
- Abductor Pollicis Longus
Secondary Actions of the Opponens Pollicis:
1. Flexion of the thumb at the carpometacarpal joint
Agonists:
- Adductor Pollicis
- Flexor Pollicis Longus
- Flexor Pollicis Brevis
Antagonists:
- Abductor Pollicis Longus
- Extensor Pollicis Brevis
Information about cause and effect of Opponens Pollicis pain:
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Massage Therapist
Owner: thewellnessdigest.com
Twelve years of experience working with clients with chronic pain, post injury pain, and post surgery pain. Muscle dysfunction is often overlooked but can hold the key to many pain conditions.
