Evidence map›Paper›PMID 26621511›Full record

ArticleBMJ open2015

Incidence of knee cartilage surgery in Norway, 2008-2011.

Cathrine Nørstad Engen, Asbjørn Årøen, Lars Engebretsen

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.1field-weighted citation impact, top 22% 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

6 citing papers in PubMed, 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

3 authors at 3 institutions in 1 country.

Cathrine Nørstad EngenOslo Sports Trauma Research Center (OSTRC), Norwegian School of Sports Sciences, Oslo, Norway Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
Asbjørn ÅrøenOslo Sports Trauma Research Center (OSTRC), Norwegian School of Sports Sciences, Oslo, Norway Department of Orthopedic Surgery, Akershus University Hospital, Lørenskog, Norway Institute of Clinical Medicine, University of Oslo, Lørenskog, Norway.
Lars EngebretsenOslo Sports Trauma Research Center (OSTRC), Norwegian School of Sports Sciences, Oslo, Norway Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway Department of Orthopedic Surgery, Oslo University Hospital, Oslo, Norway.
Akershus University Hospital · NOOslo Sports Trauma Research Center · NOUniversity of Oslo · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveA systematic and long-term data collection on the treatment of focal cartilage defects (FCDs) of the knee is needed. This can be achieved through the foundation of a National Knee Cartilage Defect Registry. The aim of this study was to establish the nationwide burden of knee cartilage surgery, defined as knee surgery in patients with an FCD. We also aimed to identify any geographical differences in incidence rates, patient demographics or trends within this type of surgery.

settingA population-based study with retrospective identification of patients undergoing knee cartilage surgery in Norway through a mandatory public health database from 2008 to 2011.

participantsWe identified all patients undergoing cartilage surgery, or other knee surgery in patients with an FCD. All eligible surgeries were assessed for inclusion on the basis of certain types of ICD-10 and NOMESKO Classification of Surgical Procedures codes. PRIMARY AND SECONDARY OUTCOME MEASURES: The variables were diagnostic and surgical codes, geographic location of the performing hospital, age and sex of the patients. Yearly incidence and incidence rates were calculated. Age-adjusted incidences for risk ratios and ORs between geographical areas were also calculated.

resultsA total of 10,830 cases of knee cartilage surgery were identified, with slight but significant decreases from 2008 to 2011 (p<0.0003). The national incidence rate was 56/100 000 inhabitants and varied between regions, counties and hospitals. More than 50% of the procedures were palliative and nearly 400 yearly procedures were reparative or restorative.

conclusionsKnee cartilage surgery is common in Norway, counting 2500 annual cases with an age-adjusted incidence rate of 68.8/100,000 inhabitants. There are significant geographical variations in incidence and trends of surgery and in trends between public and private hospitals. We suggest that a national surveillance system would be beneficial for the future evaluation of the treatment of these patients.

Indexed as

AdultAgedCartilage DiseasesFemaleHumansIncidenceInternational Classification of DiseasesKneeMaleMiddle AgedNorwayOrthopedic ProceduresRegistriesRetrospective StudiesEPIDEMIOLOGY

Identifiers

PMID26621511
PMCPMC4679842
OpenAlexW2212340760

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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.