This composite educational image illustrates the anatomy of the ankle and subtalar joint ligaments using a mouse model, featuring three micro-dissection photographs (A-C) and two corresponding anatomical diagrams (D-E). Panel A presents a medial view identifying the anterior talofibular ligament (ATFL) situated between the fibula and talus. Panel B provides a lateral view highlighting the cervical ligament (CL) within the sinus tarsi region. Panel C shows the medial perspective of the ankle, specifically labeling the deltoid ligament (DL) complex along with the posterior tibial tendon (TP) and the Achilles tendon (AT). The anatomical diagrams (D and E) serve as schematic guides to the spatial orientation of these structures: Diagram D depicts the lateral anatomy including the ATFL and CL relative to the tibia, talus, and calcaneus, while Diagram E focuses on the medial deltoid ligament (DL) and its bony attachments. These visuals demonstrate ligamentous landmarks essential for orthopedic research, particularly in studies of joint stability and post-traumatic osteoarthritis. Scale bars represent 1 mm.

This composite educational image illustrates the normal anatomy and multimodal imaging appearances of the talocrural (ankle) joint. Panel (a) is a schematic diagram showing the articulation of the distal tibia and fibula with the talus, highlighting the articular cartilage (blue), cortical bone (black), bone marrow (yellow), and ligaments (brown). Panel (b) presents a conventional mortise view radiograph, demonstrating smooth articular surfaces (arrows) and normal trabecular bone patterns (stars). Panel (c) is a coronal MRI (Proton Density fat-suppressed) showing the cartilage as a thin layer of intermediate signal intensity (arrows) and homogenous marrow signal (stars). Panel (d) displays a Cone Beam CT (CBCT) arthrography reformatted image, where intra-articular contrast provides superior visualization of the cartilage lining on the talar dome (arrow) and distal tibia (arrowhead) compared to routine MRI. The set serves as a comparative reference for diagnosing osteochondral lesions, emphasizing how different modalities delineate the interface between subchondral bone and articular cartilage.

This medical illustration presents two views of the human ankle joint: an anterior-posterior (top) and a lateral (bottom) view, detailing the primary ligamentous structures and bony anatomy. Key anatomical structures include the distal tibia and fibula, talus, and calcaneus. The syndesmotic complex is represented by the interosseous membrane, anterior inferior tibiofibular ligament (AITFL), and posterior inferior tibiofibular ligament (PITFL). The lateral collateral ligament complex is clearly labeled, showcasing the orientation of the anterior talofibular ligament (ATFL) and the calcaneofibular ligament (CFL). The lateral view provides a detailed perspective on the diagonal course of the CFL from the fibular tip to the calcaneus, as well as the inferior transverse tibiofibular ligament. Medially, the deltoid ligament is visible in the anterior view. This educational diagram is designed for orthopedic and radiological study, illustrating the stabilization mechanisms of the ankle joint and the specific spatial relationships between ligaments and tarsal bones involved in inversion and eversion injuries.

This diagnostic image is a weight-bearing anteroposterior (AP) radiograph of a human foot, illustrating key anatomical landmarks used in orthopedic assessment. The X-ray clearly visualizes the tarsal bones (talus, calcaneus, navicular, cuboid, and cuneiforms), the five metatarsals, and the phalanges. Superimposed on the anatomy are two white reference lines used to measure the Talo-first metatarsal angle. One line is drawn along the longitudinal axis of the talus, and the second line follows the longitudinal axis of the first metatarsal bone. The intersection of these lines demonstrates the angular relationship between the hindfoot and the forefoot. This measurement is clinically significant in evaluating foot deformities such as hallux valgus or pes planus. The radiograph demonstrates normal bone density and joint space preservation in the midfoot and forefoot regions, serving as an educational example of radiographic alignment and musculoskeletal geometry.

This diagnostic image is an axial T1-weighted turbo spin-echo (TSE) MRI scan of the human foot, focusing on the midfoot and forefoot anatomy. The scan clearly depicts the metatarsals, tarsal bones including the cuneiforms and navicular, and surrounding soft tissue structures. A prominent white arrow points to the base of the first metatarsal, where a distinct, low-signal intensity linear discontinuity is visible. This finding is characteristic of a cortical fracture at the base of the first metatarsal bone. The image illustrates a common pediatric or orthopedic trauma scenario, often associated with high-impact activities like trampoline use. The visualization of the fatty marrow signal on T1-weighted imaging provides high anatomical detail, allowing for the identification of structural disruptions in the cortical bone. This content is suitable for medical education regarding musculoskeletal radiology, particularly in the diagnosis of occult or acute foot fractures.