Distal Radioulnar Subluxation Research Articles

Traumatic Ulnar Carpal Translocation, Distal Radioulnar Joint Subluxation with Occult Perilunate Injury

Abstract Background Perilunate injuries pose a significant treatment challenge, particularly when initially missed or underestimated. These injuries have a multitude of variations as propagation of the injury may be through ligaments and/or bone, with more recent appreciation given to nondislocated perilunate injuries. Case Description We present a new variant of perilunate injuries, not dislocated (PLIND). This occult ligamentous perilunate injury was associated with ulnar carpal translocation, radiocarpal subluxation, and distal radioulnar subluxation. The extent of injury was fully appreciated intraoperatively, with only subtle clues present on preoperative exam and imaging, emphasizing the high index of suspicion required to identify these injuries. Clinical outcome at 1-year follow-up was very satisfactory. Literature Review PLIND consist a distinct subset within the spectrum of perilunate injuries in which there is no observed disruption of the capitolunate relationship. Based on few cases reported in the literature (attributable to their rare occurrence and likely additional lack of awareness surrounding the injury pattern), current recommendations for surgical management include arthroscopic or open approach to appropriately address osseous and ligamentous injuries. Clinical Relevance Recognition of PLIND injuries is challenging given the lack of frank dislocation of the capitate head on the lunate, as observed in classic perilunate injuries. Heightened clinical suspicion in patients with consistent mechanism and presentation, followed by timely surgical management, may limit sequelae of persistent instability and arthritis. Our case contributed to relevant literature by presenting a previously undescribed PLIND variant combined with radiocarpal instability, ulnar carpal translocation, and distal radioulnar subluxation.

An Extraordinary case report: Bilateral pure perilunate dislocation

Introduction: Perilunate dislocation of the carpus is an unusual injury, requiring high-energy trauma. The simultaneous bilateral form is so rare that is worthy of report, with only a few cases mentioned in the literature. We present the case of a patient with an open volar dislocation of the right wrist associated with a closed dorsal dislocation of the left wrist and distal radioulnar subluxation. Case report: A 30-year-old, right hand dominant male, suffered injuries to both wrists after being involved in a high-speed car accident. Examination of the patient revealed diffuse swelling and tenderness to both wrists with a lacerated wound over the dorsum of right wrist. Anteroposterior and lateral X-rays of both wrists were obtained, which showed bilateral perilunate pure dislocations: volar in the right side and dorsal the left side combined with a dorsal subluxation of the distal radioulnar joint. Discussion: Perilunate dislocations are relatively rare injuries involving approximately only 7% of all injuries of the carpus. It is often overlooked in primary evaluations, approximately 25% of perilunate injuries were missed. A better comprehension of the injury's mechanism and its full extent has led to better management strategies. It is recommended in the literature, that the best treatment of these injuries is open reduction, restoration of carpal bones relationship, repair of the ligaments and a proper rehabilitation and physiotherapy program.

Wrist: coronal and transaxial CT scanning.

Computed tomography (CT) of the wrist can be useful in selected clinical applications and is generally performed in the transaxial orientation. Coronal and transaxial CT scanning of the wrist were directly compared in three patients and in a normal, isolated cadaveric hand. Twenty other patients with wrist problems who underwent only transaxial or coronal CT examinations were also considered to assess the clinical indications of both techniques. A simple Lucite holder was designed and tested to simplify patient positioning with the coronal CT technique. In most clinical situations, coronal images were superior to transaxial images because the former were more detailed and easier to interpret. In some specific cases, however, especially fracture of the hamate hook and distal radioulnar subluxation, transaxial CT scanning was superior.