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Supinator Anatomy: Origin, Insertion, Action, Innervation



O, I, A of the Supinator

Origin: Lateral epicondyle of the humerus, the radical collateral ligament, the supinator crest of the ulna, and the radial collateral and annular ligaments.
Insertion: Proximal portion of the anterolateral surface of the radius
Actions: Supination of the forearm
Innervation: Radial Nerve (C6, C7, C8)
Vascular Supply: Radial recurrent artery from the radial artery

Primary Actions of the Supinator:

1. Rotates the forearm so the palm of the hand faces upward

  Agonists: Biceps Brachii


  • Pronator Teres
  • Pronator Quadratus



Information about cause and effect of supinator pain:

Supinator Muscle: Elbow and Thumb Pain

Anatomy Coloring Book


The Anatomy Coloring Book is one of the best study and reference books for beginning anatomy students. The diagrams are clearly labeled and allow you to see the relationship and placement of the various structures of the body. You will also be surprised how the act of coloring will help with recall. But this is not just a beginners book, it is also great for practitioners and therapists to have on hand to use with clients and patients to use as a visual reference.

Trail Guide To The Body

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!



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