Chronic distal radiocubital instability. The function of this joint is the rotation of the forearm or pronosupination, for which joint and synchronous work of the distal and proximal radio-ulnar joints is necessary. ARCD instability can be divided into 3 categories: bone injury, soft tissue injury, or combined injury to both structures. In this case it is a ligamentous injury, and that is why in this case it was treated by ligamentoplasty. Dr. Sergi Barrera @dr.sergibarrera #radiocubital #instability #radioulnar #wrist #Wrist #msk #orthopedics #clinical #video #physicalexam