Evidence map›Paper›PMID 32940749›Full record

ArticleInternational orthopaedics2021

Subchondral bone cysts regress after correction of malalignment in knee osteoarthritis: comply with Wolff's law.

Weiguo Wang, Ran Ding, Nianfei Zhang, Philippe Hernigou

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Article in International orthopaedics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.4field-weighted citation impact, top 21% of its field
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

14 citing papers in PubMed, 21 citations in OpenAlex.

  1. Navigation-Assisted Extra-articular Approach for Curettage of a Subchondral Bone Cyst of the Humeral Trochlea.Journal of the American Academy of Orthopaedic Surgeons. Global research & reviews · 2026
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  12. Osteotomies around the knee lead to corresponding frontal realignment of the ankle.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2022
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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

4 authors at 2 institutions in 2 countries.

Weiguo WangDepartment of Orthopaedic Surgery, China-Japan Friendship Hospital, No. 2 Yinghua East Road, Chaoyang District, Beijing, 100029, People's Republic of China.
Ran DingDepartment of Orthopaedic Surgery, China-Japan Friendship Hospital, No. 2 Yinghua East Road, Chaoyang District, Beijing, 100029, People's Republic of China.
Nianfei ZhangDepartment of Orthopaedic Surgery, China-Japan Friendship Hospital, No. 2 Yinghua East Road, Chaoyang District, Beijing, 100029, People's Republic of China. zhangnianfei@hotmail.com.ORCID 0000-0001-9271-8092
Philippe HernigouDepartment of Orthopaedic Surgery, University Paris East (UPEC), Hôpital Henri Mondor, Creteil, France.
China-Japan Friendship Hospital · CNUniversité Paris-Est Créteil · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe purpose of this study is to discuss the mechanical function of subchondral bone cysts and its relationship with Wolff's law.

methodsOne hundred forty symptomatic knees (120 patients) with osteoarthritis were subjected to MRI before high tibial osteotomy (HTO). Subchondral bone cysts (SBCs) were detected on 72 knees of these 140 knees. SBCs, bone marrow lesion (BML), and hip-knee-ankle (HKA) axis were measured by using validated methods. After HTO, the evolution of cysts was evaluated on MRI performed with a five year follow-up on the 72 knees with pre-operative cysts.

resultsAt baseline, 70 (97%) of these 72 knees had a BML surrounding the SBCs; the maximum cyst volume was 874 mm

conclusionRegression of subchondral bone cysts may be related to restoration of an appropriate load at the subchondral bone. With applying poroelasticity to bone mechaincs, this finding may suggest that SBCs and BMLs may be a physiological adaptation to mechanic overload. More basic research is needed to prove this matter.

Indexed as

Bone CystsOsteoarthritis, KneeHumansKnee JointMagnetic Resonance ImagingOsteotomyOsteoarthritisPoroelasticitySubchondral bone cystWolff’s law

Identifiers

PMID32940749
OpenAlexW3087188289

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.