Ultrasound-guided Achilles tendon rupture repair using knotless barbed suture: a cadaveric study
Bibliographic record
Abstract
PURPOSE: To describe a novel, minimally invasive, ultrasound-guided Achilles tendon repair technique using a knotless barbed suture and to assess its feasibility in a cadaveric model. METHODS: A midportion Achilles tendon rupture was simulated in a Thiel-embalmed cadaver. The tendon was repaired percutaneously under ultrasound guidance using a 0.6-mm USP 1 knotless barbed suture mounted on a 19-gauge, 3.5-inch curved needle. The needle was advanced intratendinously under continuous ultrasound guidance. Tendon reapproximation was assessed with ultrasound and confirmed by anatomical dissection. The resting plantar flexion angle was measured before and after the repair. RESULTS: The Achilles tendon repair technique resulted in successful reapproximation of the tendon ends with anatomic alignment. Post-repair ultrasound and dissection confirmed accurate intratendinous suture placement and full tendon continuity. The resting plantar flexion angle increased from 23° to 50° after the repair. CONCLUSION: This is the first report of an ultrasound-guided Achilles tendon repair using a knotless barbed suture. The technique appears feasible in a cadaveric model and may represent a promising minimally invasive option for patients requiring improved tendon approximation. Its office-based approach may reduce surgical risks associated with conventional repair and tendon elongation seen with conservative treatment. Further biomechanical and clinical studies are warranted to evaluate its safety, durability, and functional outcomes.
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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 | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 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".