Evidence map›Paper›PMID 42740821›Full record

ArticleJSES international2026

Undersurface rotator cuff repair for partial-thickness tears using the Opus knotless system: a prospective cohort of 1000 consecutive cases with a 1.4% retear rate.

Victor Chen, Dineth Fernando, Alvin Deng, Chen Zhang, Stone Sima, James Bilbrough, Eric Changbean Kang, Ala Hawa, Mina Shenouda, Lisa Hackett and 2 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in JSES international, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors.

Victor ChenOrthopaedic Research Institute, St George Hospital Campus, University of New South Wales, Sydney, Australia.
Dineth FernandoOrthopaedic Research Institute, St George Hospital Campus, University of New South Wales, Sydney, Australia.
Alvin DengOrthopaedic Research Institute, St George Hospital Campus, University of New South Wales, Sydney, Australia.
Chen ZhangOrthopaedic Research Institute, St George Hospital Campus, University of New South Wales, Sydney, Australia.
Stone SimaOrthopaedic Research Institute, St George Hospital Campus, University of New South Wales, Sydney, Australia.
James BilbroughOrthopaedic Research Institute, St George Hospital Campus, University of New South Wales, Sydney, Australia.
Eric Changbean KangOrthopaedic Research Institute, St George Hospital Campus, University of New South Wales, Sydney, Australia.
Ala HawaOrthopedics Division, Department of Surgery, Faculty of Medicine, Yarmouk University, Irbid, Jordan.
Mina ShenoudaOrthopaedic Research Institute, St George Hospital Campus, University of New South Wales, Sydney, Australia.
Lisa HackettOrthopaedic Research Institute, St George Hospital Campus, University of New South Wales, Sydney, Australia.
Patrick LamOrthopaedic Research Institute, St George Hospital Campus, University of New South Wales, Sydney, Australia.
George A C MurrellOrthopaedic Research Institute, St George Hospital Campus, University of New South Wales, Sydney, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Partial-thickness rotator cuff tears are a common cause of shoulder pain and disability. There are few large prospective cohort studies evaluating outcomes following arthroscopic repair, and reported structural failure rates vary widely across techniques. The purpose of this study was to (1) evaluate the structural and clinical outcomes of an arthroscopic undersurface knotless inverted mattress repair for partial-thickness rotator cuff tears, (2) assess the effect of surgical experience on outcomes, and (3) place these outcomes in the context of published series of alternative techniques. Methods: A prospectively collected cohort of 1000 consecutive patients with articular- or bursal-sided partial-thickness supraspinatus tears >50% thickness underwent arthroscopic repair using the Opus knotless system (Smith & Nephew) with an undersurface knotless inverted mattress technique. Structural integrity was assessed using ultrasound at a minimum of 6 months. Pain, range of motion, and strength were assessed pre-operatively and at 6 weeks, 12 weeks, and 6 months. Results: The cohort comprised 570 males and 430 females with a mean (±standard deviation) age of 56 ± 11 years (range, 18-87). Tear area was 1.5 ± 1.0 cm Conclusion: Arthroscopic undersurface knotless inverted mattress repair of partial-thickness rotator cuff tears achieved a retear rate of 1.4%, with no reoperations for infection or post-operative stiffness and consistent improvements across all clinical outcome measures. Retear rates declined after approximately 200 cases, a pattern consistent with a learning-curve effect, although this descriptive moving-average analysis is exploratory and was not subjected to formal change-point modeling. The favorable structural outcomes and short operative time observed with this technique may relate, in part, to minimal disruption of the remaining tendon and subacromial bursa and the direct intra-articular visualization afforded by this undersurface approach.

Indexed as

OutcomesPainPartial thicknessRange of motionRetearRotator cuff repair

Identifiers

PMID42740821
PMCPMC13572000

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.