Rigor Reviewed

Rigor-Reviewed Manuscript

Collagenase Injection versus Limited Fasciectomy for Dupuytren's Contracture.

Name: Αlpha¹ Rigor Record — Collagenase Injection versus Limited Fasciectomy for Dupuytren's Contracture.
Item: Collagenase Injection versus Limited Fasciectomy for Dupuytren's Contracture.
Rating: 39
Author: Αlpha¹

Dias J, Tharmanathan P, Arundel C, Welch C, Wu Q, Leighton P, Armaou M, Johnson N, James S, Cooke J, Bainbridge L, Craigen M, Warwick D, Brady S, Flett LG, Jones J, Knowlson CN, Watson M, Keding A, Hewitt CE, Torgerson D

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Αlpha¹ Rigor Review — 1★ (Critical), 2 critical, 3 high issues for “Collagenase Injection versus Limited Fasciectomy for Dupuytren's Contracture.”

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Αlpha¹ Editorial

This rigor review was examined and confirmed by Αlpha¹ Editorial · August 16, 2026

Αlpha¹ Rigor Review

Rigor Reviewed

1 / 5

Critical — a demonstrable failure

Interventional Study

Critical

High-priority

How this rating was calculated▸

Started at 5★ — deductions

StatisticsImpossible or misreported statistic ×4−4★
IntegrityIntegrity concern−0.5★
StatisticsPrinted percentage does not match its own count (capped) ×4−0.25★
ReportingData & code availability partially met−0.25★
CitationsUnresolved reference−0.25★

A demonstrable critical failure caps the rating at the minimum, regardless of the deductions above.

Model-reported confidence: highReviewer agreement: highEngine: 7.39.0Source: full text

Not verified in this report

The numeric-impossibility checks (GRIM/GRIMMER/DEBIT/SPRITE) did not run: 14 reported means were read, and their group size is not stated where the values are printed (this source has no machine-readable table structure). These checks need the count the mean was averaged over, so none was performed.
No data or code availability links were detected to verify.

Problems surfaced6 types

Numerical inconsistencies3

Values that contradict each other or are impossible for the stated sample: recomputed p-values and test statistics, GRIM/GRIMMER checks on summary numbers, percentages against their own counts, totals against their parts, and estimates against their own confidence intervals.

Summary statistic impossible for the stated N (GRIM/GRIMMER)Recomputed
Printed percentage does not match its own countRecomputed
Internal contradictions in the reported numbersAssessed

Overstated conclusions1

Conclusions that reach past what the paper's own results support — including a significance claim that no longer holds when the statistic is recomputed, and efficacy resting on an unvalidated surrogate endpoint.

Conclusions only partially backed by the presented evidenceAssessed

Reporting gaps1

Required detail the manuscript never states — study design, biological variables, ethics approval and consent, key resources, statistical reporting, data and code availability, and overall transparency.

Data/code availability incompleteAssessed

Broken references and links1

References checked against Crossref, OpenAlex and Retraction Watch for retractions and resolvability, plus declared data and code links probed for whether they resolve to content matching the paper.

References not resolvable to a published paperRecomputed

This Αlpha¹ Rigor Review uses AI Rigor Reviewers trained on a curated corpus of high-fidelity and retracted papers, with expert supervision and curation. It can still make mistakes; verify each finding against the source before relying on it.

Critical findings

• PERCENT: 8% does not match the reported count 26/178
• PERCENT: 1.7% does not match the reported count 5/149
• PERCENT: 8% does not match the reported count 26/178
• PERCENT: 1.7% does not match the reported count 5/149

This is a well-conducted and well-reported randomized non-inferiority trial with rigorous design, clear ethical approvals, and appropriate statistical methods. The main weakness is the vague data availability statement, which lacks a concrete access mechanism, and a few minor reporting inconsistencies.

Both reviewers independently scored all eight dimensions and agreed on all statuses, so no divergence needed reconciliation. The statistics verification component could not recompute any of the 8 checked tests because they are model-based estimates or threshold p-values, which is expected and not a deficiency. The citation check found one reference not found in any registry, which is flagged as a potential fabrication signal.

6 major claims checked against the paper's own evidence: 2 only partially supported (evidence backs part of the claim; gaps or caveats remain); the rest adequately supported.

Efficacy claim is anchored to an adequate endpoint and a meaningful effect.

4 reported summary statistics mathematically impossible for the stated N (PERCENT). 4 printed percentages that do not match their own count.

1 integrity concern flagged (0 high).

Reporting

Eight Dimensions7 pass · 1 warn

The introduction cites prior studies on collagenase versus placebo and notes the lack of direct comparative evidence. The rationale for the trial is logically derived from this gap, and the non-inferiority design is justified by the potential benefits of collagenase (clinic administration, cost savings, quicker recovery). Limitations of prior research are implicitly addressed by the trial's design, though not explicitly discussed.

Sub-criteria

prior work citedADEQUATE

premise rationaleADEQUATE

limitations addressedINADEQUATE

Per reviewer (2) — the votes behind the verdict

PASSReviewer 1· 90% conf

The paper establishes a clear scientific premise by citing prior research on both treatments and justifying the need for a head-to-head comparison.

Evidence

direct quote[Introduction, paragraph 2]

“Collagenase was shown to be better than placebo in correcting the contracture to 0-5 degrees at 30 days.”