Evidence map›Paper›PMID 27491660›Full record

ArticleBone & joint research2016

Three dimensional measurement of minimum joint space width in the knee from stereo radiographs using statistical shape models.

E A van IJsseldijk, E R Valstar, B C Stoel, R G H H Nelissen, N Baka, R Van't Klooster, B L Kaptein

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Bone & joint research, 2016. 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
2.1field-weighted citation impact, top 14% 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, 14 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

7 authors at 1 institution in 1 country.

E A van IJsseldijkDepartment of Orthopaedics, Leiden University Medical Center, Biomechanics and Imaging Group, PO 9600, 2300 RC, Leiden, The Netherlands.
E R ValstarDepartment of Orthopaedics, Leiden University Medical Center, Biomechanics and Imaging Group, PO 9600, 2300 RC, Leiden, The Netherlands.
B C StoelDepartment of Radiology, Leiden University Medical Center, Division of Image Processing, PO 9600, 2300 RC, Leiden, The Netherlands.
R G H H NelissenDepartment of Orthopaedics, Leiden University Medical Center, Biomechanics and Imaging Group, PO 9600, 2300 RC, Leiden, The Netherlands.
N BakaDepartment of Orthopaedics, Leiden University Medical Center, Biomechanics and Imaging Group, PO 9600, 2300 RC, Leiden, The Netherlands.
R Van't KloosterDepartment of Radiology, Leiden University Medical Center, Division of Image Processing, PO 9600, 2300 RC, Leiden, The Netherlands.
B L KapteinDepartment of Orthopaedics, Leiden University Medical Center, Biomechanics and Imaging Group, PO 9600, 2300 RC, Leiden, The Netherlands B.L.Kaptein@lumc.nl.
Leiden University Medical Center · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesAn important measure for the diagnosis and monitoring of knee osteoarthritis is the minimum joint space width (mJSW). This requires accurate alignment of the x-ray beam with the tibial plateau, which may not be accomplished in practice. We investigate the feasibility of a new mJSW measurement method from stereo radiographs using 3D statistical shape models (SSM) and evaluate its sensitivity to changes in the mJSW and its robustness to variations in patient positioning and bone geometry. MATERIALS AND

methodsA validation study was performed using five cadaver specimens. The actual mJSW was varied and images were acquired with variation in the cadaver positioning. For comparison purposes, the mJSW was also assessed from plain radiographs. To study the influence of SSM model accuracy, the 3D mJSW measurement was repeated with models from the actual bones, obtained from CT scans.

resultsThe SSM-based measurement method was more robust (consistent output for a wide range of input data/consistent output under varying measurement circumstances) than the conventional 2D method, showing that the 3D reconstruction indeed reduces the influence of patient positioning. However, the SSM-based method showed comparable sensitivity to changes in the mJSW with respect to the conventional method. The CT-based measurement was more accurate than the SSM-based measurement (smallest detectable differences 0.55 mm versus 0. 82 mm, respectively).

conclusionThe proposed measurement method is not a substitute for the conventional 2D measurement due to limitations in the SSM model accuracy. However, further improvement of the model accuracy and optimisation technique can be obtained. Combined with the promising options for applications using quantitative information on bone morphology, SSM based 3D reconstructions of natural knees are attractive for further development.Cite this article: E. A. van IJsseldijk, E. R. Valstar, B. C. Stoel, R. G. H. H. Nelissen, N. Baka, R. van't Klooster, B. L. Kaptein. Three dimensional measurement of minimum joint space width in the knee from stereo radiographs using statistical shape models. Bone Joint Res 2016;320-327. DOI: 10.1302/2046-3758.58.2000626.

Indexed as

KneemJSW measurementRoentgen stereophotogrammetric analysisStatistical shape model

Identifiers

PMID27491660
PMCPMC5005472
OpenAlexW2475488511

What OpenQuestion holds

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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.