{
 "serie": "s301_T1_TSE_SAG.",
 "n_imgs": 18,
 "s": 34.7,
 "respuesta": "**Limited assessment:** These are sampled sagittal T1-weighted images only. Cartilage, marrow edema, ligament injury, and small amounts of fluid cannot be reliably assessed without the remaining planes and fluid-sensitive sequences.\n\n### Abnormal or suspicious findings\n\n| Location | Description | Confidence |\n|---|---|---|\n| **Medial talar dome/medial tibiotalar articulation** | Regional subchondral T1 hypointensity with mild contour irregularity, most apparent on slices 6–7. Suspicious for chronic osteochondral/subchondral injury with sclerosis. No clearly displaced osteochondral fragment. The extent of any cartilage defect or associated marrow edema cannot be established. | **Medium** |\n| **Anterior tibiotalar joint** | Small marginal bony prominences at the anterior tibial plafond and dorsal talar neck, suggesting mild chronic degenerative/post-traumatic spurring. Central tibiotalar joint space is relatively preserved. | **Medium** |\n| **Distal fibula/lateral malleolar tip** | Irregular chronic-appearing bony contour, with a possible small corticated fragment adjacent to the tip/anterior margin on the lateral slices. This may represent remote avulsion injury. Adjacent low-signal tissue is somewhat prominent, potentially reflecting ligamentous/capsular scarring, but individual lateral ligaments cannot be characterized here. | **Medium** for chronic bony change; **low** for an avulsion fragment or ligament scarring |\n| **Medial subtalar articulation, near the sustentaculum tali** | Mild focal articular irregularity and low-signal subchondral margins on slices 5–6, possibly representing localized chronic degenerative change. This is incompletely profiled and may be accentuated by partial volume. | **Low** |\n\n### Other assessed structures\n- **Bones:** No definite acute fracture, collapse, or destructive osseous lesion.\n- **Cartilage:** No gross central talar-dome surface collapse; subtle chondral defects cannot be excluded.\n- **Tendons:** Achilles and the visualized portions of the flexor, extensor, and peroneal tendons are grossly continuous. No definite tendon tear identified.\n- **Plantar fascia:** No convincing proximal thickening or disruption.\n- **Ligaments:** The lateral ligament complex, syndesmosis, and deltoid ligament are not adequately assessed on these sagittal T1 images.\n- **Joint fluid/soft tissues:** No large ankle or subtalar effusion, discrete soft-tissue mass, or substantial soft-tissue swelling is evident.\n\n**Principal concern:** Chronic medial tibiotalar osteochondral/subchondral change, with mild marginal spurring and possible sequelae of an old lateral malleolar avulsion injury. Confirmation requires the full MRI examination."
}