Evidence map›Paper›PMID 33088865›Full record

ArticleThe archives of bone and joint surgery2020

Comparison of Clinical, Functional, and Radiological Outcomes of Total Knee Arthroplasty Using Conventional and Patient-Specific Instrumentation.

Soheil Mehdipour, Mohamad Qoreishi, Ali Keipourfard

Abstract read
In one paragraph

Article in The archives of bone and joint surgery, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 2 pooled it
–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

5 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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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.

Soheil MehdipourShahid Beheshti University of Medical Sciences, Tehran, Iran.
Mohamad QoreishiBoneoint and elated issues esearch enter, Akhtar ospital, Shaheed Beheshti niversity of edical ciences, Tehran, Iran.
Ali KeipourfardShahid Beheshti University of Medical Sciences, Tehran, Iran.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundRecently, patient-specific instrumentation (PSI) systems have been developed in order to increase the accuracy of component positioning during total knee arthroplasty (TKA); however, the findings of previous studies are controversial in this regard. In the current randomized clinical study, the outcomes of computer tomography (CT)-based PS (patient specific)-guided TKA were compared to the results of conventional instrumentation (CVI) TKA. The guides were designed on the basis of distal femoral and proximal tibial pin orientation of the conventional related guides.

methodsThe present study was carried out on 24 TKA candidates randomly assigned to two PSI (n=12) and CVI (n=12) groups. The patients were postoperatively followed for 2 years. Then, the hip-knee-ankle angle (HKAA), femoral component flexion, and orientation of components in the coronal plane were measured. In addition, the Western Ontario and McMaster Universities Osteoarthritis (WOMAC) Index and Knee Society Score (KSS) questionnaire were completed for all the patients.

resultsThe rate of the outliers of the HKAA was higher in the CVI group (41.7% and 8.3%;

conclusionThe CT-based PS-guided TKA may result in the improved postoperative mechanical alignment of the limb and should be considered in complicated TKAs. However, future studies should investigate whether the results of PSI TKA support the considerably higher costs of this technique.

Indexed as

Mechanical alignmentPatient-specific instrumentationTotal knee arthroplasty

Identifiers

PMID33088865
PMCPMC7547163

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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.