Posterior interosseous nerve syndrome
Posterior interosseous nerve syndrome (PINS) is a rare condition that occurs when the posterior interosseous nerve, a branch of the radial nerve, becomes compressed or damaged. This can cause weakness or paralysis of the muscles that control wrist and finger extension, as well as sensory changes in the affected area. PINS can be caused by a variety of factors, including trauma, tumors, and repetitive motions. Treatment options may include rest, physical therapy, medication, or surgery.
Entrapment of the radial nerve at the elbow is the third most common compressive neuropathy of the upper limb after carpal tunnel and cubital tunnel syndromes. Because the incidence is relatively low and many agents can compress it along its whole course, entrapment of the radial nerve or its branches can pose a considerable clinical challenge. Several of these agents are related to normal or variant anatomy. The most common of the compressive neuropathies related to the radial nerve is the posterior interosseus nerve syndrome. Appropriate treatment requires familiarity with the anatomical traits influencing the presenting symptoms and the related prognoses 1)