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Perilunar instability progresses in a typical fashion w/ injury 1st to scapholunate (SL) ligament, followed by capitolunate (CL) articulation, lunotriquetral (LT) ligament & finally dorsal radiocarpal (DRC) ligament, allows lunate to rotate & dislocate. https://t.co/kCP0sq6NyL
The radial nerve splits into superficial radial branch & PIN at the anterior aspect of the radiocapitellar joint, just proximal to the supinator. Compressive neuropathy of the PIN leads to motor dysfunction, namely weakness with wrist and finger extension. https://t.co/6OIkApcG6Y