Title: Dorsal wrist pain<br/>Author: Brian Corwell<br/><a href='http://umem.org/profiles/faculty/294/'>[Click to email author]</a><hr/><p> <span style="font-size:18px;"><strong>Intersection syndrome</strong></span></p> <p> Intersection syndrome is an overuse injury of the forearm.</p> <p> Pain is located approximately 2 finger breaths (4cm) proximal to the wrist joint.</p> <ul> <li> Pathology occurs at the “intersection” of the 1<sup>st</sup> (APL and EPB) and 2<sup>nd</sup> (ECRL and ECRB) dorsal compartments.</li> <li> Friction occurs at the muscle bellies of the abductor pollicis longus (APL) and extensor pollicis brevis (EPB), where they cross over the extensor carpi radialis longus (ECRL) and brevis (ECRB)</li> </ul> <p> <a href="https://www.sportsmedreview.com/wp-content/uploads/2020/11/intersectionsyndrome.png">https://www.sportsmedreview.com/wp-content/uploads/2020/11/intersectionsyndrome.png</a></p> <p style="margin-left:.5in;"> Mechanism: friction is caused by repetitive wrist extension activities</p> <p style="margin-left:.5in;"> Commonly: Rowing, skiing, tennis, canoeing and weightlifting </p> <p style="margin-left:.5in;"> Friction may cause crepitus with finger/wrist extension.</p> <p style="margin-left:.5in;"> Tenderness, mild swelling may be present</p> <ul> <li> Intersection syndrome is often confused with de Quervain’s tendinopathy. </li> </ul> <p> </p> <ul> <li> Key distinguishing features: <ul> <li> Location of the pain: Intersection syndrome is more dorsal while de Quervain’s is more radial</li> <li> <a href="https://www.reumatologiaclinica.org/en-distal-intersection-syndrome-an-unusual-articulo-S2173574319300656#imagen-2">https://www.reumatologiaclinica.org/en-distal-intersection-syndrome-an-unusual-articulo-S2173574319300656#imagen-2</a></li> <li> Exacerbating maneuvers: Pronation/extension vs ulnar wrist deviation</li> <li> Noise: Crepitus with wrist extension</li> </ul> </li> </ul> <p> </p> <p> </p>