Ultrasonographic variations are present in the distal sesamoidean impar ligament of clinically sound horses
Bibliographic record
Abstract
Ultrasonography is an established diagnostic test for evaluating horses with foot pain due to suspected podotrochlear apparatus pathology. However, variations from the previously reported normal appearance of the distal sesamoidean impar ligament have not always coincided with lameness. The objective of this prospective, cross-sectional, descriptive study was to characterize variations in the ultrasonographic appearance of the distal sesamoidean impar ligament in sound horses using the transcuneal approach. Transcuneal ultrasonography of the distal sesamoidean impar ligament was performed on sound horses, and images were evaluated for fiber pattern, echogenicity, and thickness. Varying echogenicities of the distal sesamoidean impar ligament compared to the deep digital flexor tendon were found. Hypoechogenic or hyperechogenic focal areas were noted in the mid-body of the distal sesamoidean impar ligament or at its attachment to the navicular bone or the distal phalanx. In some of the sound horses, an anechoic linear area between the deep digital flexor tendon and distal sesamoidean impar ligament was observed as well as multifocal areas of hyperechogenicity or hypoechogenicity, irregular fiber pattern, and measurable thickening of the distal sesamoidean impar ligament. Several findings were bilaterally symmetrical, and no finding was always bilaterally symmetrical each time it was noted. This study supports transcuneal ultrasonography as an ancillary diagnostic tool for evaluating the equine distal sesamoidean impar ligament, describes sonographic variations in clinically sound horses, and suggests that the clinical significance of a lesion may not be determined by comparison of the distal sesamoidean impar ligament in the contralateral limb.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.003 | 0.003 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.003 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.002 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".