Evidence map›Paper›PMID 32660651›Full record

ArticleKnee surgery & related research2020

Posterior condylar offset changes and its effect on clinical outcomes after posterior-substituting, fixed-bearing total knee arthroplasty: anterior versus posterior referencing.

Moon Jong Chang, Seung-Baik Kang, Chong Bum Chang, Do Hwan Han, Hyung Jun Park, Keummin Hwang, Jisu Park, Il-Ung Hwang, Seung Ah Lee, Sohee Oh

Open access · diamondAbstract read
In one paragraph

Article in Knee surgery & related research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
2.0field-weighted citation impact, top 13% 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

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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

16 citing papers in PubMed, 27 citations in OpenAlex.

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4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

10 authors at 4 institutions in 1 country.

Moon Jong ChangDepartment of Orthopaedic Surgery, Seoul National University College of Medicine, SMG-SNU Boramae Medical Center, Seoul, 07061, South Korea.
Seung-Baik KangDepartment of Orthopaedic Surgery, Seoul National University College of Medicine, SMG-SNU Boramae Medical Center, Seoul, 07061, South Korea. ossbkang@gmail.com.ORCID http://orcid.org/0000-0002-1184-4482
Chong Bum ChangDepartment of Orthopaedic Surgery, Seoul National University College of Medicine, SMG-SNU Boramae Medical Center, Seoul, 07061, South Korea.
Do Hwan HanDepartment of Orthopaedic Surgery, Seoul National University College of Medicine, SMG-SNU Boramae Medical Center, Seoul, 07061, South Korea.
Hyung Jun ParkDepartment of Orthopaedic Surgery, Seoul National University College of Medicine, SMG-SNU Boramae Medical Center, Seoul, 07061, South Korea.
Keummin HwangDepartment of Orthopaedic Surgery, Seoul National University College of Medicine, SMG-SNU Boramae Medical Center, Seoul, 07061, South Korea.
Jisu ParkDepartment of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, 03080, South Korea.
Il-Ung HwangDepartment of Emergency Medicine, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, 03080, South Korea.
Seung Ah LeeDepartment of Physical Medicine and Rehabilitation, College of Medicine, Kyung Hee University, Seoul, 05278, South Korea.
Sohee OhDepartment of Biostatistics, SMG-SNU Boramae Medical Center, Seoul, 07061, South Korea.
Seoul National University · KRSeoul National University Hospital · KRKyung Hee University · KRSNUH SMG-SNU Boramae Medical Center · KR

Funding

National Research Foundation of Korea 2017M3A9D8063538
6 · The paper itself

Abstract

backgroundWe sought to determine whether there was a difference in the posterior condylar offset (PCO), posterior condylar offset ratio (PCOR) and clinical outcomes following total knee arthroplasty (TKA) with anterior referencing (AR) or posterior referencing (PR) systems. We also assessed whether the PCO and PCOR changes, as well as patient factors were related to range of motion (ROM) in each referencing system.

methodsThis retrospective study included 130 consecutive patients (184 knees) with osteoarthritis who underwent primary posterior cruciate ligament (PCL)-substituting fixed-bearing TKA. The difference between preoperative and postoperative PCO and PCOR values were calculated. Clinical outcomes including ROM and Western Ontario and McMaster University (WOMAC) scores were evaluated. Furthermore, multiple linear regression analysis was performed to determine the factors related to postoperative ROM in each referencing system.

resultsThe postoperative PCO was greater in the AR group (28.4 mm) than in the PR group (27.4 mm), whereas the PCO was more consistently preserved in the PR group. The mean postoperative ROM after TKA was greater in the AR group (129°) than in the PR group (122°), whereas improvement in WOMAC score did not differ between the two groups. Preoperative ROM was the only factor related to postoperative ROM in both groups.

conclusionsThere was no difference in postoperative PCO in AR and PR group and the PCO was not associated with postoperative ROM. PCO was more consistently preserved after surgery in the PR group. The postoperative PCO and PCOR changes did not affect the postoperative ROM. Furthermore, similar clinical outcomes were achieved in the AR and PR groups.

trial registrationRetrospectively registered (Trial registration number: 06-2010-110).

Indexed as

Anterior referencing systemPosterior condylar offsetPosterior condylar offset ratioPosterior referencing system

Identifiers

PMID32660651
PMCPMC7219226
OpenAlexW2999370910

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LicenceCC BY
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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.