Distal limb cellulitis and Digital Flexor Tendon Sheath effusion secondary to porcupine quill migration in a horse.
Bibliographic record
Abstract
A 3-year-old Lusitano gelding was referred to the Ontario Veterinary College for evaluation of distal limb swelling and cellulitis affecting the fetlock–pastern region. On presentation the gelding was mildly anxious, yet all vital parameters where with in normal limits. Physical examination revealed moderate soft-tissue swelling and cellulitis over the left hind fetlock–pastern region, along with moderate effusion of the digital flexor tendon sheath (DFTS). Pain was elicited on palpation of the affected area. A small, rounded scab was detected on the lateral aspect of the proximal pastern, associated with mildly firm surrounding tissue. Digital pulses in the affected limb were increased. The gelding was sound at the walk in a straight line on a hard surface. Ultrasonographic examination confirmed the presence of seven porcupine quills located within the peri-synovial soft tissues of the metatarsophalangeal joint (MTPJ) and DFTS) with one quill identified within the DFTS itself. Surgical treatment consisted of ultrasonographically guided removal of the quills, lavage of the DFTS, and intra-techal administration of antimicrobials. One additional quill was identified; however, ultrasonographic artifacts limited the visualization and precluded extraction during the initial procedure. This quill was successfully retrieved during a second anesthetic procedure performed two days later. Porcupine quills injuries in horses are most frequently reported in the facial region and distal limbs. Due to their capacity for migration, quills can penetrate and damage both soft tissues and synovial structures. This case highlights the critical role of ultrasonography in the diagnosis, localization, and surgical removal of porcupine quills, which was essential to achieving a favourable outcome.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.002 | 0.002 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.005 | 0.002 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
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 source (direct Gemma or distilled Codex), 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".