Evidence map›Paper›PMID 32556436›Full record

ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2021

Increased external rotation of the osteoarthritic knee joint according to the genu varum deformity.

Jung-Ro Yoon, Jin Kyu Lee, JeongAh Ryu, Ruby Um, Jae-Hyuk Yang

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Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 pooled it
1.6field-weighted citation impact, top 16% 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

7 citing papers in PubMed, 1 synthesis or guideline pooled it, 15 citations in OpenAlex.

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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

5 authors at 4 institutions in 1 country.

Jung-Ro YoonDepartment of Orthopedic Surgery, Veterans Health Service Medical Center, Seoul, Republic of Korea.
Jin Kyu LeeDepartment of Orthopedic Surgery, Seoul Hospital, Hanyang University Medical Center, Seoul, Korea.
JeongAh RyuMusculoskeletal Division of Diagnostic Radiology, Guri Hospital, Hanyang University Medical Center, Guri, Korea.
Ruby UmMedical Student, Hanyang University Medical Center, Seoul, Korea.
Jae-Hyuk YangDepartment of Orthopedic Surgery, Guri Hospital, Hanyang University Medical Center, 153, Gyeongchunro, Guri, Gyeonggi, 11923, South Korea. jaekorea@hanyang.ac.kr.ORCID http://orcid.org/0000-0001-8853-1997
Hanyang University Guri Hospital · KRHanyang University Medical Center · KRHanyang University Seoul Hospital · KRVeterans Health Service Medical Center · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo evaluate the rotational profile of the lower extremity using computed tomography (CT) in accordance with the degree of varus deformity in medial condyle-affected knee joint osteoarthritis (OA).

methodsThis retrospective study included 1036 patients (872 lower extremities) with end-stage knee OA. The coronal alignment of the lower extremity was measured using standing anteroposterior radiography. The CT parameters of femoral anteversion and tibial torsion were assessed in relation to the knee joint. The axes were the femoral neck axis; the distal femoral axis, which was composed of the anterior trochlear axis, the clinical transepicondylar axis, and the posterior condylar axis; the axis of the proximal tibial condyles; and the bimalleolar axis.

resultsThere was a tendency for increased external rotation of the knee joint parameters in relation to the hip and ankle joints as varus deformity of the lower extremity increased. The relative external rotational deformity of the knee joint in relation to the hip joint had a positive value with a good correlation. The relative external rotational deformity of the knee joint in relation to the ankle joint also demonstrated a positive value with a good correlation.

conclusionThe distal femur and proximal tibia (knee joint) tended to rotate externally in relation to the hip and ankle joint, respectively, as the degree of varus deformity increased. This study identified the relationship between lower extremity varus deformity and rotational deformity of knee joints with OA. LEVEL OF EVIDENCE: III.

Indexed as

AgedAnkle JointArthroplasty, Replacement, KneeFemaleFemurFemur NeckGenu VarumHip JointHumansKnee JointLower ExtremityMaleOsteoarthritis, KneeRadiographyRange of Motion, ArticularRetrospective StudiesComputed tomographyExternalGenu varumKnee jointOsteoarthritisRotation

Identifiers

PMID32556436
OpenAlexW3036980577

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.