Posterior Interosseous Nerve Release 4 Mackinnon SE1 Yee A1 August 27, 2013Disclosure: No authors have a financial interest in any of the products, devices, or drugs mentioned in this production or publication.Compression of the posterior interosseous nerve can exhibit clinical weakness or functional loss of finger / thumb extension and lack of ulnar wrist extension. Provocative tests can confirm whether the radial tunnel in the region of the posterior interosseous nerve is the area of compression. Multiple anatomical structures can be involved in compressing the nerve in the tunnel, however the primary site of compression is the arcade of Froshe; this being the tendinous proximal border of the superficial head of the supinator. Other compressive structures can include the radial recurrent vessels (Leash of Henry) and tendinous proximal border of the extensor carpi radialis brevis. Decompression of the posterior interosseous nerve involves releasing these structures. If there is an associated lateral epicondylitis, release of the extensor carpi radialis brevis is taken further laterally. In this case, this patient presented with a recovering traumatic C7,8,T1 plexus injury. However, recovery of radial nerve function was halted for a few weeks with marked discomfort over the radial tunnel. Release of the posterior interosseous nerve was elected to promote more prompt and complete functional recovery.Keywords: Arcade of Frosheradial nervebrachial plexuscompression neuropathynerve decompressionposterior interosseous nerve You must login to view the full article and extended video on this page. Standard Edition Table of Contents- Slow down- Frustration00:00:00 - Introduction00:00:15 - Orientation00:00:25 - Incision / Exposure00:00:54 - Identifying the Posterior Antebrachial Cutaneous Nerve00:01:26 - Identifying the Interval between the Brachioradialis and ECRL00:01:35 - Exposing the Interval and Plane between the Brachioradialis and ECRL00:02:09 - Identifying the Superficial Branch of Radial Nerve00:02:29 - Identifying the Radial Recurrent Vessels and ECRB Nerve00:02:36 - Ligating the Radial Recurrent Vessels00:02:54 - Identifying the Posterior Interosseous Nerve00:03:05 - Identifying / Releasing the Tendinous Proximal Border of ECRB00:04:25 - Identifying / Releasing the Tendinous Proximal Border of Supinator00:05:33 - Releasing Distal Tendinous Fibers of Supinator00:05:46 - Proximal Exposure for Additional Compressive Structures00:06:01 - Radial Nerve Anatomy in the Forearm You must login to view the full article and extended video on this page. 4 Comments parag shah 20th January 2017 Dear Dr.Mackinnon Absolutely fantastic demonstration , and a wonderful video of a PIN decompression!! Have been a long time fan of your work and have seen it on Vumedi,Youtube and now on Passio.. thank you!! best regards Dr.parag shah Ahmedabad,India Log in to Reply | Susan Mackinnon 20th January 2017 You’re so kind Parag. Thank you and please let us know how you like PASSIO. Log in to Reply | Maruxa Rodriguez 15th June 2017 Incredibly clear thanks a lot Log in to Reply | Mahmoud Elsayed Gouda 15th August 2017 Elegant dissection Thanks for you and thanks for the great assistant. Log in to Reply | Leave a Comment Cancel replyYou must be logged in to post a comment.