Evidence map›Paper›PMID 35242956›Full record

ArticleArthroplasty today2022

Causes and Clinical Outcomes of Patellar Post Impingement.

Takenori Tomite, Hidetomo Saito, Hiroaki Kijima, Noriyuki Ishikawa, Yuji Hatakeyama, Hiroshi Tazawa, Naohisa Miyakoshi

Open access · goldAbstract read
In one paragraph

Article in Arthroplasty today, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.2field-weighted citation impact, top 60% 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

1 citing paper in PubMed, 2 citations in OpenAlex.

  1. 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

7 authors at 2 institutions in 1 country.

Takenori TomiteDepartment of Orthopedic Surgery, Akita Red Cross Hospital, Akita, Japan.
Hidetomo SaitoDepartment of Orthopedic Surgery, Akita University Graduate School of Medicine, Akita, Japan.
Hiroaki KijimaDepartment of Orthopedic Surgery, Akita University Graduate School of Medicine, Akita, Japan.
Noriyuki IshikawaDepartment of Orthopedic Surgery, Akita Red Cross Hospital, Akita, Japan.
Yuji HatakeyamaDepartment of Orthopedic Surgery, Akita Red Cross Hospital, Akita, Japan.
Hiroshi TazawaDepartment of Orthopedic Surgery, Akita Red Cross Hospital, Akita, Japan.
Naohisa MiyakoshiDepartment of Orthopedic Surgery, Akita University Graduate School of Medicine, Akita, Japan.
Akita Red Cross Hospital · JPAkita University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPatellar post impingement (PPI), which occurs when the post impinges on the patella, may reportedly cause poor total knee arthroplasty (TKA) outcomes. The causes of PPI and its effect on clinical outcomes and symptoms were investigated. MATERIAL AND

methodsThe study subjects were 100 patients who underwent TKA (65 posterior stabilized TKA, 35 bi-cruciate stabilized [BCS] TKA). Whether PPI occurred during surgery was investigated; the patients were then classified into a PPI+ group and a PPI- group, and whether the implant or patellar shape was related to the occurrence of PPI was examined. The measurement parameters included patellar shape, joint range of motion (ROM), and clinical outcome using the new Knee Society Score.

resultsThere were 38 knees in the PPI+ group and 62 knees in the PPI- group. There was no difference in patellar shape between the 2 groups, but PPI was more frequent in patients with short patellar tendon and those with low patellar height. In terms of implant type, the PPI+ group included 12 patients (18.5%) who underwent posterior stabilized TKA and 26 (74.3%) who underwent BCS TKA. There was no difference between the 2 groups in either joint ROM or new Knee Society Score. These results suggest that the position of the patella and implant shape that causes the post to be positioned anteriorly may contribute to PPI.

conclusionPPI occurred more frequently in knees with low patellar height and in patients who had undergone BCS TKA. PPI had no effect on joint ROM or clinical outcome.

Indexed as

Anterior knee painbi-cruciate stabilized total knee arthroplastyNew Knee Society ScorePatellar post impingementPosterior stabilized total knee arthroplasty

Identifiers

PMID35242956
PMCPMC8857593
OpenAlexW4213305535

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.