Evidence map›Paper›PMID 41333626›Full record

ArticleJournal of experimental orthopaedics2025

Double tibial tunnels 'supra' over-the-top anterior cruciate ligament reconstruction with lower initial graft tension achieves comparable anterior stability to single-tunnel: A cadaveric study using a robotic simulator.

Kousuke Shiwaku, Tomoyuki Suzuki, Konsei Shino, Satoshi Yamakawa, Hidenori Otsubo, Daisuke Suzuki, Shinichiro Okimura, Katsunori Takahashi, Shogo Nabeki, Hirofumi Ohnishi and 2 more

Abstract read
In one paragraph

Article in Journal of experimental orthopaedics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
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

2 citing papers in PubMed.

  1. Article
  2. Article
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.

Kousuke ShiwakuDepartment of Orthopedic Surgery Sapporo Medical University School of Medicine Sapporo Japan.ORCID https://orcid.org/0000-0003-4913-4512
Tomoyuki SuzukiSapporo Maruyama Orthopaedic Hospital Sapporo Japan.
Konsei ShinoSports Orthopaedic Center Yukioka Hospital Osaka Japan.
Satoshi YamakawaDepartment of Sports Medical Biomechanics, Graduate School of Medicine Osaka University Osaka Japan.
Hidenori OtsuboSapporo Sports Clinic Sapporo Japan.
Daisuke SuzukiDepartment of Health Science Hokkaido Chitose Collage of Rehabilitation Chitose Japan.
Shinichiro OkimuraDepartment of Orthopedic Surgery Sapporo Medical University School of Medicine Sapporo Japan.
Katsunori TakahashiDepartment of Orthopedic Surgery Sapporo Medical University School of Medicine Sapporo Japan.
Shogo NabekiDepartment of Orthopedic Surgery Sapporo Medical University School of Medicine Sapporo Japan.
Hirofumi OhnishiDepartment of Public Health Sapporo Medical University School of Medicine Sapporo Japan.
Hiromichi FujieDepartment of Mechanical Engineering, Graduate School of Science and Engineering Tokyo Metropolitan University Tokyo Japan.
Atsushi TeramotoDepartment of Orthopedic Surgery Sapporo Medical University School of Medicine Sapporo Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purpose: To compare the anterior tibial translation (ATT) between single-bundle (SB) and double-bundle (DB) 'supra'-over-the-top anterior cruciate ligament reconstruction (s-OTT ACLR) during the anterior drawer test in a cadaveric model. Methods: This was a controlled laboratory study. Seven fresh-frozen cadaveric knee specimens and a robotic testing system were used. Initially, the same testing procedure (100 N anterior drawer load applied at 0°, 15°, 30°, 60° and 90° of knee flexion) was applied to the following four different knee conditions: intact, anterior cruciate ligament (ACL)-sectioned, SB s-OTT ACLR and DB s-OTT ACLR knees. Subsequently, a combined load of 5 Nm internal tibial torque and 10 Nm valgus torque was applied at 15° and 30° of knee flexion as a simulated pivot shift. During the tests, anterior tibial translation (ATT) was recorded. The initial tension was set at 22 N for the SB s-OTT ACLR and 11 N for each graft in the DB s-OTT ACLR at 30° of knee flexion. For the SB s-OTT ACLR with an 8-mm-diameter tibial tunnel, the drilling area was 16 Π mm² (4 × 4 × Π). Regarding the DB s-OTT ACLR with two 5-mm-diameter tibial tunnels, the total drilling area was 12.5 Π mm² (2.5 × 2.5 × Π × 2). Results: Both SB and DB s-OTT ACL reconstructions significantly reduced ATT compared with the ACL-sectioned state under both anterior drawer and simulated pivot-shift loads, while showing no difference from the intact knee. No significant ATT difference was detected between SB and DB s-OTT ACLRs at any tested flexion angle, and DB achieved anterior knee stability comparable to SB despite its lower initial graft tension. Conclusions: DB s-OTT ACLR demonstrated ATT and in situ graft force comparable to SB s-OTT ACLR in a cadaveric robotic study. These findings suggest that DB s-OTT ACLR can achieve anterior knee stability similar to SB s-OTT ACLR with lower initial graft tension. Level of Evidence: N/A.

Indexed as

ACL reconstructionbiomechanicscadaveric kneedouble bundle (DB)open physisrobotic system‘supra’‐over‐the‐top (s‐OTT)

Identifiers

PMID41333626
PMCPMC12666155

What OpenQuestion holds

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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.