Evidence map›Paper›PMID 33364607›Full record

ArticleArthroscopy, sports medicine, and rehabilitation2020

Tibial Tubercle-Midepicondyle Distance Can Be a Better Index to Predict the Outcome of Medial Patellofemoral Ligament Reconstruction Than Tibial Tubercle-Trochlear Groove Distance.

Tomoya Iseki, Hiroshi Nakayama, Takashi Daimon, Shunichiro Kambara, Ryo Kanto, Motoi Yamaguchi, Shintaro Onishi, Toshiya Tachibana, Shinichi Yoshiya

Open access · goldAbstract read
In one paragraph

Article in Arthroscopy, sports medicine, and rehabilitation, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 1 pooled it
0.3field-weighted citation impact, top 44% 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

5 citing papers in PubMed, 1 synthesis or guideline pooled it, 6 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

9 authors at 3 institutions in 1 country.

Tomoya IsekiDepartment of Orthopaedic Surgery, Hyogo College of Medicine, Nishinomiya, Japan.
Hiroshi NakayamaDepartment of Orthopaedic Surgery, Hyogo College of Medicine, Nishinomiya, Japan.
Takashi DaimonDepartment of Biostatistics, Hyogo College of Medicine, Nishinomiya, Japan.
Shunichiro KambaraDepartment of Orthopaedic Surgery, Nishinomiya Kaisei Hospital, Nishinomiya, Japan.
Ryo KantoDepartment of Orthopaedic Surgery, Hyogo College of Medicine, Nishinomiya, Japan.
Motoi YamaguchiDepartment of Orthopaedic surgery, Meiwa Hospital, Nishinomiya, Japan.
Shintaro OnishiDepartment of Orthopaedic Surgery, Hyogo College of Medicine, Nishinomiya, Japan.
Toshiya TachibanaDepartment of Orthopaedic Surgery, Hyogo College of Medicine, Nishinomiya, Japan.
Shinichi YoshiyaDepartment of Orthopaedic surgery, Meiwa Hospital, Nishinomiya, Japan.
Hyogo Medical University · JPMiwa Hospital · JPHyogo Prefectural Nishinomiya Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo compare the clinical utility of tibial tubercle-midepicondyle (TT-ME) and tibial tubercle-trochlear groove (TT-TG) distances in predicting the risk for recurrent instability after isolated MPFL reconstruction.

methodsA consecutive series of patients with recurrent patellar dislocation who underwent isolated MPFL reconstruction made up the study population. The patients were followed for a minimum of 2 years. In assessment of surgical outcome, the patient was deemed to exhibit "postoperative recurrent patellar instability" when ≥1 of the following 3 conditions was identified: redislocation, positive apprehension sign, and positive J-sign (manifestation of abnormal patellar tracking). As for radiological parameters for position of the tibial tubercle, TT-ME distance (transverse distance between the tibial tubercle and midpoint of the transepicondylar line) and TT-TG distance were measured on axial computed tomography images. The clinical utility as a factor to predict the outcome of MPFL reconstruction was compared between the 2 distances using receiver operating characteristic (ROC) analysis. In addition, various radiological indices potentially influencing the surgical outcome were subjected to multivariable logistic regression analysis.

resultsWe examined 38 knees in 38 patients with a mean age at surgery of 17.6 years. Postoperative recurrent patellar instability was encountered in 8 of the 38 knees. The ROC curve analysis showed the TT-ME distance to be a significantly better indicator in predicting surgical outcome than the TT-TG distance (

conclusionsAnalysis of our patient population undergoing isolated MPFL reconstruction showed that the TT-ME distance was a significantly better indicator than the TT-TG distance to predict the risk for recurrent instability after isolated MPFL reconstruction performed for patellar instability. LEVEL OF EVIDENCE: Level IV, therapeutic case series.

Identifiers

PMID33364607
PMCPMC7754522
OpenAlexW3101440280

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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.