Evidence map›Paper›PMID 24057422›Full record

ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2014

Unconstrained arthroplasty in type II valgus knees: posterior stabilized or cruciate retaining?

Chia Liang Ang, Stephanie Fook, Shi Lu Chia, Pak Lin Chin, Ngai Nung Lo, Seng Jin Yeo

Abstract readComparative StudyEvaluation Study
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In one paragraph

Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing 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

7 citing papers in PubMed.

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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

6 authors.

Chia Liang AngDepartment of Orthopaedic Surgery, Singapore General Hospital, 20 College Road, Level 4, Singapore, 169856, Singapore, med80199@yahoo.com.
Stephanie Fook
Shi Lu Chia
Pak Lin Chin
Ngai Nung Lo
Seng Jin Yeo

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeType II valgus knees are defined by medial collateral ligament laxity. This paper studies the results of posterior stabilized (PS) and cruciate retaining (CR) knee implants in type II valgus knees.

methodsFrom 1999 to 2009, there were 100 type II valgus knees in 95 patients eligible for study (63 PS, 37 CR). Patients had prospectively collected clinical data up to 2 years after surgery.

resultsAt 24 months after surgery, the CR group had reduced range of motion (PS: median 126.0°, CR: median 114°; n.s.) and a marginally but statistically significant increased valgus alignment (PS: median 5°, CR: median 6°; p = 0.011). Despite this, both groups produced equal and marked improvements in SF-36, function score and knee score of the Knee Society score, and Oxford knee score.

conclusionsOverall, both PS and CR implants performed equally well in type II valgus knees at 24 months post-operatively. Further longer-term studies would be warranted to assess for late instability. LEVEL OF EVIDENCE: Retrospective, Level III.

Indexed as

Knee ProsthesisAgedAged, 80 and overArthroplasty, Replacement, KneeBone RetroversionFemaleFollow-Up StudiesHumansKnee JointMaleMiddle AgedOsteoarthritis, KneeRange of Motion, ArticularRetrospective StudiesTreatment Outcome

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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.