Evidence map›Paper›PMID 30511096›Full record

Trial reportKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2019

An intraoperative load sensor did not improve the early postoperative results of posterior-stabilized TKA for osteoarthritis with varus deformities.

Sang Jun Song, Se Gu Kang, Yeon Je Lee, Kang Il Kim, Cheol Hee Park

Abstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 4 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

13 citing papers in PubMed, 4 syntheses or guidelines pooled it.

  1. Pooled it
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  5. Trial
  6. Surgeon-defined assessment is a poor predictor of knee balance in total knee arthroplasty: a prospective, multicenter study.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2021
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  13. Load imbalances existed as determined by a sensor after conventional gap balancing with a tensiometer in total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020
    Article
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

5 authors.

Sang Jun SongDepartment of Orthopaedic Surgery, College of Medicine, Kyung Hee University, Seoul, South Korea.
Se Gu KangDepartment of Orthopaedic Surgery, College of Medicine, Kyung Hee University, Seoul, South Korea.
Yeon Je LeeDepartment of Orthopaedic Surgery, College of Medicine, Kyung Hee University, Seoul, South Korea.
Kang Il KimDepartment of Orthopaedic Surgery, College of Medicine, Kyung Hee University, Seoul, South Korea.
Cheol Hee ParkDepartment of Medicine, Graduate School, Kyung Hee University, 23 Kyunghee-daero, Dongdaemun-gu, Seoul, 130-872, South Korea. rdohead@hanmail.net.ORCID http://orcid.org/0000-0001-8297-6872

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeIn the present study, the early results of sensor-assisted versus manually balanced posterior-stabilized total knee arthroplasty (TKA) for osteoarthritis with varus deformities were prospectively compared.

methodsFifty patients undergoing sensor-assisted TKA (group S) and 50 patients receiving manually balanced TKA (group M) were prospectively compared. The groups did not differ in terms of demographics, preoperative clinical status, or severity of deformity. The knee and function scores (KS and FS), Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), and range of motion (ROM) were evaluated clinically. The mechanical axes and positions of components were assessed radiographically. In sensor-assisted TKA, the medial and lateral compartment loads were compared based on the patellar positions of inversion and eversion.

resultsThere was no between-group difference in the postoperative KS or FS (n.s., respectively). The average postoperative WOMAC score was 17.0 in group S and 18.0 in group M (n.s.). The ROM was 131.2° in group S and 130.8° in group M (n.s.). Neither the postoperative alignment of the mechanical axis nor the component positioning differed between the groups (n.s.). In sensor-assisted TKA, the difference between the medial and lateral compartment loads was less than 15 lbs (6.8 kg) in each knee. The lateral compartment load increased after patellar eversion (p < 0.001).

conclusionThere are concerns about the cost-benefit ratio of the intraoperative load sensor, despite its advantage of more precisely assessing ligament balance without patellar eversion, which resulted in a smaller lateral gap. A long-term follow-up study with a large cohort is required. LEVEL OF EVIDENCE: II.

Indexed as

Knee ProsthesisStress, MechanicalAgedArthroplasty, Replacement, KneeFemaleFollow-Up StudiesHumansIntraoperative PeriodKnee JointLigamentsMaleMaterials TestingMiddle AgedOsteoarthritis, KneePatellaPostoperative PeriodArthroplastyBalancingKneeSensor

Identifiers

PMID30511096

What OpenQuestion holds

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Read underepoch 390

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.