Evidence map›Paper›PMID 31656183›Full record

Trial reportBMC musculoskeletal disorders2019

Assessment of valgus laxity after release of the medial structure in medial open-wedge high tibial osteotomy: an in vivo biomechanical study using quantitative valgus stress radiography.

Dai Sato, Eiji Kondo, Koji Yabuuchi, Jun Onodera, Tomohiro Onodera, Tomonori Yagi, Keita Sakamoto, Akira Takasawa, Norimasa Iwasaki, Kazunori Yasuda

Abstract readClinical Trial
In one paragraph

Trial report in BMC musculoskeletal disorders, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing 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

17 citing papers in PubMed.

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  9. Effect of limb alignment correction on medial meniscus extrusion under loading condition in high tibial osteotomy.Asia-Pacific journal of sports medicine, arthroscopy, rehabilitation and technology · 2023
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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

10 authors.

Dai SatoDepartment of Orthopedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita-15 Nishi-7, Kita-ku, Sapporo, 060-8638, Japan.
Eiji KondoCentre for Sports Medicine, Hokkaido University Hospital, Kita-14 Nishi-5, Kita-ku, Sapporo, 060-8648, Japan. eijik@med.hokudai.ac.jp.
Koji YabuuchiDepartment of Orthopedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita-15 Nishi-7, Kita-ku, Sapporo, 060-8638, Japan.
Jun OnoderaDepartment Orthopedic Surgery, Yagi Orthopedic Hospital, 1-35, Nishino-3-5, Nishi-ku, Sapporo, 063-0033, Japan.
Tomohiro OnoderaDepartment of Orthopedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita-15 Nishi-7, Kita-ku, Sapporo, 060-8638, Japan.
Tomonori YagiDepartment Orthopedic Surgery, Yagi Orthopedic Hospital, 1-35, Nishino-3-5, Nishi-ku, Sapporo, 063-0033, Japan.
Keita SakamotoDepartment of Diagnostic and Interventional Radiology, Hokkaido University Hospital, Kita-14 Nishi-5, Kita-ku, Sapporo, 060-8648, Japan.
Akira TakasawaDepartment of Pathology, Sapporo Medical University School of Medicine, S-1 W-17, Chuo-ku, Sapporo, 060-8556, Japan.
Norimasa IwasakiDepartment of Orthopedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita-15 Nishi-7, Kita-ku, Sapporo, 060-8638, Japan.
Kazunori YasudaDepartment Orthopedic Surgery, Yagi Orthopedic Hospital, 1-35, Nishino-3-5, Nishi-ku, Sapporo, 063-0033, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTo perform medial open-wedge high tibial osteotomy (OWHTO), surgeons expose the medial-proximal tibia by releasing or cutting the superficial layer of the medial collateral ligament (sMCL). Biomechanically, the sMCL provides primary restraint against valgus forces. Therefore, any release of the sMCL can cause valgus instability of the knee joint. The purpose of this study was to assess valgus laxity after release of the medial structure of the knee during OWHTO.

methodsBetween 2009 and 2015, 84 consecutive patients (93 knees) who underwent OWHTO using a locking plate were enrolled in this study. All patients underwent radiological examinations before surgery, during surgery, 1 year after surgery, and after plate removal to objectively assess valgus laxity. The medial joint space (MJS) and the joint line convergence angle (JLCA) of the knee were evaluated using quantitative valgus stress radiography. Clinical evaluation was performed 2 years after surgery.

resultsThe mean functional knee score improved significantly, from 65.5 to 91.1 points (p < 0.0001). The mechanical axis percentage shifted to pass through a point 69.7% lateral from the medial edge of the tibial plateau. The MJS and JLCA increased significantly during OWHTO surgery (11.0 mm, 7.4 °, p < 0.0001). However, no significant differences were noted in the MJS and JLCA among preoperative, 1-year postoperative periods and after plate removal.

conclusionValgus laxity was significantly greater after release of the sMCL. However, no significant differences were noted in valgus laxity in preoperative, 1-year postoperative periods and after plate removal. Complete release of the sMCL did not cause postoperative valgus laxity after OWHTO surgery.

trial registrationTrial registration number: No.012-0360.

Indexed as

AdultAgedBone PlatesFemaleHumansJoint InstabilityKnee JointMaleMiddle AgedOsteoarthritis, KneeOsteotomyPostoperative PeriodProspective StudiesTibiaMedial open-wedge high tibial osteotomySuperficial layer of the medial collateral ligamentValgus instabilityValgus stress test

Identifiers

PMID31656183
PMCPMC6815443

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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.