Skin-Derived Fibroblasts for the Treatment of Refractory Achilles Tendinosis: Preliminary Short-Term Results
Post-publication record
Source: Retraction Watch, joined by DOI. OpenAlex records retraction as is_retracted, a boolean over a state space with at least four values, so it cannot express an expression of concern, a correction or a reinstatement; it reports them as false, which reads as “fine”.
Bibliographic record
Abstract
Update Update on June 17, 2015: The retraction notice for this article has been revised as explained in J Bone Joint Surg Am. 2015 June 17;97(12):1011. Update on April 15, 2015: This article has been retracted as explained in “A letter to our readers” in J Bone Joint Surg Am. 2015 Apr 15;97(8):667. Update on November 20, 2013: An expression of concern regarding this article was published in J Bone Joint Surg Am. 2013 Nov 20;95(22):2057. Background: Chronic Achilles tendinosis is a common musculoskeletal disorder often refractory to conservative management. Our study aimed to assess the safety and efficacy of the use of autologous skin-derived collagen-producing cells in the treatment of refractory Achilles tendinosis. Methods: We conducted a randomized, double-blind study on forty Achilles tendons in thirty-two patients (eight with bilateral involvement) who had a clinical and radiographic diagnosis of Achilles tendinosis. The patients ranged from twenty-two to sixty-seven years old and had a mean age of 45.2 years. The patients with unilateral involvement were randomized into the treatment group (twelve patients) and control group (twelve patients). The eight patients with bilateral involvement were individually randomized into treatment and control groups, with eight Achilles tendons in each group. Achilles tendons in the treatment group were injected under ultrasound guidance with laboratory-expanded, skin-derived fibroblasts suspended in autologous plasma. The control group received ultrasound-guided injection of a local anesthetic and physiotherapy. The Victorian Institute of Sport Assessment (VISA) questionnaire and visual analog scale (VAS) scores were used as the main outcome measures for both groups. Results: Significant differences in the mean VISA and VAS scores were detected between the treatment and the control groups for the patients with unilateral involvement at six months (p < 0.001 for both). With use of the Mann-Whitney U Test, significant differences in the VISA score were observed at the second visit and at the three-month and six-month visits (p = 0.02, p = 0.007, and p < 0.001 respectively). The VAS scores also showed significant differences at the second visit and at the six-month evaluation (p = 0.014 and p < 0.001, respectively). The eight patients with bilateral involvement were analyzed separately; with the number of patients studied, no significant differences in the VISA or VAS scores were observed between the treatment group and the control group. Conclusions: These preliminary short-term results demonstrate that the injection of skin-derived fibroblasts for the treatment of Achilles tendinosis is safe. However, larger studies with a longer duration of follow-up are required to determine the long-term effectiveness before wider clinical application is considered. Level of Evidence: Therapeutic Level II. See Instructions for Authors for a complete description of levels of evidence.
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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 | 0.002 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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 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".