{
 "serie": "s401_T1_TSE",
 "n_imgs": 24,
 "s": 49.7,
 "respuesta": "**Limited assessment:** These are sampled axial T1-weighted images only. Small cartilage defects, marrow edema, ligament tears, and small amounts of fluid cannot be reliably assessed without the other planes and fluid-sensitive sequences.\n\n### Abnormal findings\n\n| Location | Finding | Confidence |\n|---|---|---|\n| **Anterior tibiotalar joint/anterior talar dome–neck junction** | Irregular, mildly prominent anterior osseous margins, with small marginal bony projections and adjacent low-T1 subchondral signal. These favor chronic degenerative/post-traumatic change, potentially with superimposed remodeling from prior osteophyte resection. Residual/recurrent anterior impingement-related change is possible, but impingement itself cannot be established from these images. | **Medium** |\n| **Anteromedial distal tibial articular margin** | Small focal low-T1 subchondral abnormality. This may represent focal sclerosis or a small degenerative subchondral cyst; its nature is not resolved on this sequence. | **Low–medium** |\n| **Anterolateral ankle capsule/ATFL region** | Mildly irregular, somewhat thickened low-signal tissue in the expected anterior talofibular ligament/capsular region, suggesting chronic sprain-related or postoperative scarring. A discrete ligament discontinuity is not convincingly demonstrated. | **Medium** |\n\n### Other structures\n\n- **Bones:** No visible acute fracture, collapse, or destructive lesion. No definite displaced osteochondral fragment. A small talar dome osteochondral lesion cannot be excluded on this sampled axial sequence.\n- **Cartilage:** No gross articular collapse or unequivocal large full-thickness defect is demonstrated. Detailed tibiotalar and subtalar cartilage grading is not possible here.\n- **Other ligaments:** No convincing gross syndesmotic disruption. The deltoid complex retains visible fibers; no definite tear is established. The calcaneofibular ligament is incompletely assessed.\n- **Tendons:** Visualized Achilles, peroneal, medial flexor, and anterior extensor tendons are grossly continuous. No definite split tear, marked tendinosis, or distended tendon sheath is identified.\n- **Joint fluid:** No large tibiotalar or subtalar effusion. Small effusions or synovitis are not reliably excluded on T1 images.\n- **Soft tissues:** No discrete mass, collection, or substantial muscle atrophy is evident.\n\n**Overall:** Probable mild chronic anterior ankle osseous remodeling/degenerative change and anterolateral ligament–capsular scarring. The remaining MRI sequences are necessary to determine whether there is associated active impingement, cartilage injury, or a focal osteochondral lesion."
}