Evidence map›Paper›PMID 29879934›Full record

ArticleBMC musculoskeletal disorders2018

Acetabular cup orientation and postoperative leg length discrepancy in patients undergoing elective total hip arthroplasty via a direct anterior and anterolateral approaches.

Ronen Debi, Evyatar Slamowicz, Ornit Cohen, Avi Elbaz, Omri Lubovsky, Dror Lakstein, Zachary Tan, Ehud Atoun

Open access · goldAbstract read
In one paragraph

Article in BMC musculoskeletal disorders, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 2 pooled it
2.6field-weighted citation impact, top 11% 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

17 citing papers in PubMed, 2 syntheses or guidelines pooled it, 22 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

8 authors at 2 institutions in 1 country.

Ronen DebiDepartment of Orthopedic Surgery, Barzilai Medical Center, 2 Hahistadrut Street, 78278, Ashkelon, Israel.
Evyatar SlamowiczDepartment of Orthopedic Surgery, Barzilai Medical Center, 2 Hahistadrut Street, 78278, Ashkelon, Israel.
Ornit CohenDepartment of Orthopedic Surgery, Barzilai Medical Center, 2 Hahistadrut Street, 78278, Ashkelon, Israel.
Avi ElbazAposTherapy Research Group, Herzelyia, Israel.
Omri LubovskyDepartment of Orthopedic Surgery, Barzilai Medical Center, 2 Hahistadrut Street, 78278, Ashkelon, Israel.
Dror LaksteinDepartment of Orthopaedic Surgery, Wolfson Medical Center , Holon, Israel.
Zachary TanDepartment of Orthopaedic Surgery, Wolfson Medical Center , Holon, Israel.
Ehud AtounDepartment of Orthopedic Surgery, Barzilai Medical Center, 2 Hahistadrut Street, 78278, Ashkelon, Israel. dratoun@gmail.com.ORCID http://orcid.org/0000-0001-5752-8891
Ben-Gurion University of the Negev · ILWolfson Medical Center · IL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTotal hip arthroplasty (THA) is considered a successful surgical procedure. It can be performed by several surgical approaches. Although the posterior and anterolateral approaches are the most common, there has been increased interest in the direct anterior approach. The goal of the present study is to compare postoperative leg length discrepancy and acetabular cup orientation among patients who underwent total hip arthroplasty through a direct anterior (DAA) and anterolateral (ALA) approaches.

methodsThe study included 172 patients undergoing an elective THA by a single surgeon at our institution within the study period. Ninety-eight arthroplasties were performed through the ALA and 74 arthroplasties through the DAA. Preoperative planning was performed for all patients. Assessment of the two groups included the following postoperative parameters: abduction angle, cup anteversion angle and leg length discrepancy (LLD). Additional analysis was done to evaluate component positioning by comparing deviation from the Lewinnek zone of safety in both approaches.

resultsFor the DAA the absolute LLD was 11 mm, ranging from -6 mm to 5 mm. For the ALA, the absolute LLD was 36 mm, ranging from -22 mm to 14 mm. None of the DAA patients had an absolute LLD greater than 6 mm. Comparatively, 7.4% of the ALA group exceeded 6 mm of LLD in addition to 2.1% with LLD greater than 10 mm. 15% of the ALA group resided out of the Lewinnek abduction zone compared to 3% of the DAA group (P = 0.016). 17% of the ALA group were out of the Lewinnek anteversion zone as opposed to 8% of the DAA group (P = 0.094).

conclusionOur study demonstrates good component positioning outcomes and LLD values in patients following THA through the DAA compared to the ALA.

Indexed as

AcetabulumAgedArthroplasty, Replacement, HipElective Surgical ProceduresFemaleHumansLeg Length InequalityMaleMiddle AgedPatient PositioningPostoperative ComplicationsAbductionAngleAnterolateralAnteversionApproachDirect anteriorLeg length discrepancyTHA

Identifiers

PMID29879934
PMCPMC5992835
OpenAlexW2806897909

What OpenQuestion holds

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LicenceCC BY
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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.