Key words: radiocarpal fracture-dislocation injury, dorsal rim fracture distal radius, luxation distal radioulnar joint, posttraumatic ulnar carpal translocation, volar intercalated segment instability, denervation of the wrist, salvage options for posttraumatic wrist joint osteoarthritis
Case presentationA 24-year-old right-handed male sustained a severe closed right radiocarpal fracture-dislocation injury (RCFDI) due to high-energy fall on his hyperextended wrist by a motorcycle accident with speed of 102,5 miles per hour. The initial radiographs showed complete dislocation of the wrist in dorsal direction accompanied with a displaced dorsal rim fracture of the articular surface of distal radius, a displaced intraarticular radial styloid fracture involving much more than one third of the articular surface of distal radius (type II), and complete luxation of distal radioulnar joint (DRUJ) in volar direction (Figure 1). Accompanying visceral, vascular or nerve injuries were not present, but closed non-displaced fractures of the left metatarsal bones II/III. First, the closed reduction and external fixation (CREF) of the wrist and DRUJ with additional radioulnar transfixation using two K-wires was performed. The postoperative computed tomography (CT) scans demonstrated complete restoration of anatomic alignment in both joints ( Figure 2A). Five days after that, the swelling around the wrist had improved, and so, the open reduction and internal fixation (ORIF) of radial styloid fracture using two 3,0 mm cannulated headless titanium compression screws (medartis®, Basel/Switzerland) could be performed that was accompanied with removal of external fixation and early denervation of the wrist ( Figure 2B). Intraoperatively, there was no radiocarpal re-luxation tendency in dorsal direction related to the accompanying dorsal rim fracture, and so its surgical reduction was not necessary. The right upper extremity was immobilized with a plaster splint involving the elbow and wrist joints for another five weeks. After that, the plaster splint and the two K-wires for radioulnar transfixation were removed, and the movement of the wrist was freed accompanied with pain-related gradual increase of load. The left non-displaced fractures of the metatarsal bones II/III were treated conservatively with a plaster splint for six weeks. Fourteen weeks after injury, the patient could be reemployed completely in his original occupation as a mechanic in a professional motorcycle racing team. At the 1-year follow-up, the postero-anterior (PA) and lateral radiographs showed distinctive posttraumatic ulnar carpal translocation (PUCT) of the entire carpus (type I) in comparison to the uninjured left wrist that was accompanied with marked volar angulation of the scaphoid bone in the absence of disruption of scapholunate ligament (SLL), but in the presence of disruption of the lunotriquetral ligament (LTL) with distinctive volar intercalated segment instability (VISI) ( Figure 3A-B). However, the patient rated his pain in visual analogue score ...