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Opponens Pollicis Anatomy: Origin, Insertion, Action

Opponens Pollicis Anatomy Study

Opponens Pollicis Muscle
Origin: Distal border of the flexor retinaculum and the trapezium
Insertion: Lateral aspect of the first metacarpal
Action:  Adducts the thumb into oppositionflexion of the thumb
Blood Suppy: Superficial palmar branches of the radial artery
Innervation: Median nerve (C8, T1)

Synergist: Adductor Pollicis, Abductor Pollicis Brevis, Flexor Pollicis Brevis

Antagonist: Opponens Digiti Minimi, Palmaris Brevis, Flexor Digiti Minimi, Abductor Digiti Minimi,

For pain and symptom information see: Opponens Pollicis Pain and Symptoms




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:

2. Flexion of the thumb at the carpometacarpal joint

  • Agonists:  Adductor Pollicis, Flexor Pollicis Longus, Flexor Pollicis Brevis
  • Antagonists:  Abductor Pollicis Longus, Extensor Pollicis Brevis

Learn Human Muscle Anatomy

Musculoskeletal Anatomy Flashcards Musculoskeletal Flashcards Are you a student or professional therapist who needs to brush up on the musculoskeletal system? Dr. Joseph E. Muscolino DC has developed a comprehensive set of flashcards that will help develop a mind’s picture of exactly where the muscles lie under the skin. A highly recommended study aid for students. Great for non students who want an easy comprehensive anatomy guide.



Trail Guide To The Body


The Trail Guide To The Body is another excellent book to help you learn the musculature of the human body. Though the book is geared toward massage therapists and physical therapist assistants, the book with its illustrations and text helps anyone gain a thorough understanding of the human musculoskeletal system and movement. I highly recommend this book for anyone studying anatomy and believe that MTs, PTAs, and teachers of body movements should have this book in their possession. I also highly recommend this book for the lay person who wants to gain understanding of the muscle, skeletal system and how our bodies move. This book will not disappoint!nce.



Out of the scores of books in my office Basic Clinical Massage Therapy is by far the most referenced book in my library. The musculoskeletal system is overlaid on human models allowing you to learn the precise location, origin and insertions of each muscle. The models are pictured in various poses throughout the book which also helps you visualize muscles in motion and their actions relationship with the skeletal structure and other muscles. Though it is written for massage therapists, it is an excellent book for anyone who wants to learn about the muscular system. MT’s will benefit from recommended treatments for each muscle.





The Trigger Point Therapy Workbook – Claire Davies, Amber Davies, and David G. Simons

Basic Clinical Massage Therapy: Integrating Anatomy and Treatment – James H. Clay and David M. Pounds

Trigger Point Therapy for Myofascial Pain – Donna Finando and Steven Finando

Massage Therapy Principles and Practice – Susan Salvo

Theory & Practice of Therapeutic Massage – Mark Beck