This composite figure displays diagnostic imaging of a pilon fracture (distal tibial fracture) in a 37-year-old male. Panels (a) and (b) are preoperative X-ray radiographs in anterior-posterior and lateral views, respectively. They reveal a complex, comminuted fracture of the right distal tibia and fibula with significant intra-articular involvement and visible displacement of bone fragments. Panel (c) is a 3D-reconstructed axial CT scan identifying key fracture components: a posterior malleolar fragment (P), a medial die-punch fragment (M), and an anterior fragment (A), alongside a lateral fragment (L). The imaging demonstrates a collapse of the articular surface and multi-planar disruption of the distal tibial plafond. Red arrows in the CT scan highlight areas of fragment displacement. These images illustrate the preoperative classification and mapping used to determine surgical approaches, such as posterolateral or anteromedial access, based on the spatial distribution of fragments relative to anatomical landmarks like the tarsal tunnel.

This composite figure illustrates a complex distal tibia fracture involving a dislocated intercalary fragment (ICF), presented through diagnostic imaging and intraoperative fluoroscopy. Panel (a) is a sagittal CT scan showing a large, displaced ICF at the distal tibia with a prominent fracture gap relative to the main tibial shaft and articular surface. Panel (b) provides an axial CT view demonstrating that the ICF consists of multiple distinct fragments dislocated anteriorly and medially, with the medial malleolus and fibula remaining visible for anatomical reference. Panel (c) is a lateral intraoperative X-ray (fluoroscopy) depicting the surgical stabilization of the fracture. The fixation strategy utilizes multiple Kirschner wires (K-wires) placed at varying trajectories to transfix the ICF, alongside a temporary anterior plate also secured with K-wires. These images demonstrate key clinical features of pilon or distal tibial plafond fractures, highlighting the challenges of reducing and fixing small, intra-articular intercalary bone fragments to restore joint congruency.

A multi-panel radiological image displaying preoperative diagnostic imaging of a Pilon fracture. Section (a) contains anteroposterior (AP) and lateral X-ray views of the right ankle, showing a complex, displaced distal tibial fracture extending into the articular surface (tibial plafond). Disruption of the distal fibula is also suggested. Section (b) provides high-resolution CT scans in coronal, sagittal, and axial planes. These CT images reveal the extensive comminution and fragmentation of the distal tibia, clearly demonstrating the involvement of the articular surface and the degree of displacement among bone fragments. The images illustrate a high-energy traumatic injury, with the CT providing critical detail for preoperative planning by characterizing the specific fracture patterns and intra-articular extension that are less distinct on the initial radiographs. This visual serves as an educational example of advanced orthopedic trauma imaging for medical students and surgical residents specializing in traumatology.

This composite medical image displays postoperative diagnostic studies of a complex distal tibia fracture, specifically a type C3.3 pilon fracture with significant bone loss. Panels A and B provide anteroposterior (AP) and lateral X-ray views showing a large, 6 cm segmental defect in the distal tibial metaphysis following debridement and bone resection. The limb is stabilized by a spanning triangular external fixator involving the tibia and foot. Internal fixation is visible at the distal articular surface, consisting of multiple Kirschner wires (K-wires) and a lateral fibular plate with screws to maintain the distal syndesmosis and fibular length. Panel C presents a sagittal computed tomography (CT) reconstruction of the ankle joint, demonstrating successful articular reduction. The CT confirms joint surface congruence with minimal displacement, specifically showing a step-off or gap of less than 2 mm. These images illustrate the first stage of a multi-stage surgical protocol for treating high-energy open fractures, focusing on debridement, joint reconstruction, and temporary stabilization before secondary bone transport procedures.

This composite clinical image displays a pathological fracture of the distal tibia through three imaging modalities: (A) plain X-ray, (B) Computed Tomography (CT), and (C) Magnetic Resonance Imaging (MRI). The plain X-ray shows a radiolucent fracture line and periosteal reaction in the distal tibial shaft above the ankle joint. The coronal CT scan provides superior bony detail, revealing cortical disruption, sequestration, and small gas bubbles within the medullary cavity and surrounding soft tissue, highly suggestive of chronic osteomyelitis with secondary fracture. The MRI (STIR or T2-weighted sequence) highlights the extent of the inflammatory process, showing hyperintense signals indicative of significant marrow edema and soft tissue phlegmon or abscess formation. This comparison demonstrates the multi-modal diagnostic approach to bone and joint infections (BJI), illustrating how CT excels at identifying structural bone destruction while MRI is most sensitive for detecting early inflammatory changes and soft tissue involvement. The location and appearance are characteristic of a complication resulting from severe osteomyelitis.

This composite diagnostic image illustrates an 'Open Logsplitter' injury of the right ankle, characterized by a severe fracture-dislocation with proximal talar displacement into the distal tibiofibular syndesmosis. Panel A (anteroposterior X-ray) shows the initial injury with significant talar displacement and a comminuted fibular fracture above the syndesmotic level. Panel B shows the ankle after closed reduction, with the talus repositioned within the mortise, although fracture lines in the fibula and distal tibia remain evident. Panels C and D provide computed tomography (CT) detail. The coronal CT reconstruction (C) demonstrates the longitudinal split and articular surface disruption of the distal tibia. The axial CT scan (D) confirms a posterior pilon fracture, showing a posterior compression fragment and cortical irregularity of the distal tibia along with widening of the syndesmotic space. The case highlights a complex high-energy trauma involving syndesmotic disruption and articular impaction, requiring careful radiological assessment for surgical planning.