Evidence map›Paper›PMID 33821306›Full record

SynthesisInternational orthopaedics2021

Causes of stiffness after total knee arthroplasty: a systematic review.

Stefano Zaffagnini, Stefano Di Paolo, Amit Meena, Domenico Alesi, Raffaele Zinno, Giuseppe Barone, Nicola Pizza, Laura Bragonzoni

Open access · greenAbstract readSystematic Review
PubMed Publisher
In one paragraph

Synthesis in International orthopaedics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 3 pooled it
4.0field-weighted citation impact, top 6% 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

15 citing papers in PubMed, 3 syntheses or guidelines pooled it, 32 citations in OpenAlex.

  1. Complications and downsides of the robotic total knee arthroplasty: a systematic review.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023
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  11. Total knee arthroplasty improves sports activity and the patient-reported functional outcome at mid-term follow-up.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023
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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 3 institutions in 2 countries.

Stefano Zaffagnini2nd Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Via G.B. Pupilli 1, 40136, Bologna, Italy.
Stefano Di PaoloUniversity of Bologna, Via Zamboni, 33, 40126, Bologna, Italy.
Amit MeenaCentral Institute of Orthopaedics, Vardhman Mahavir Medical College & Safdarjung Hospital, New Delhi, 110029, India.
Domenico Alesi2nd Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Via G.B. Pupilli 1, 40136, Bologna, Italy. domenicoalesi@ymail.com.ORCID 0000-0002-8841-056X
Raffaele ZinnoUniversity of Bologna, Via Zamboni, 33, 40126, Bologna, Italy.
Giuseppe BaroneUniversity of Bologna, Via Zamboni, 33, 40126, Bologna, Italy.
Nicola Pizza2nd Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Via G.B. Pupilli 1, 40136, Bologna, Italy.
Laura BragonzoniUniversity of Bologna, Via Zamboni, 33, 40126, Bologna, Italy.
Zambon (Italy) · ITIstituto Ortopedico Rizzoli · ITVardhman Mahavir Medical College & Safdarjung Hospital · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundKnee stiffness after total knee arthroplasty (TKA) often leads to pain and discomfort, failing to meet patients' expectations on the surgical procedure. Despite the growing debate on the topic, a comprehensive literature analysis of stiffness causes has never been conducted. Thus, the purpose of the present study was to systematically review the literature regarding the main causes of stiffness after TKA.

methodsPubmed Central, Scopus, and EMBASE databases were systematically reviewed according to the Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA) guidelines for studies on stiffness and pain or discomfort after TKA through November 2020. Overall, 25 articles matched the selection criteria and were included in the study. Clinical relevance and strength of evidence of the included studies were graded using the risk of bias and the methodological index for non-randomized studies quality assessment tools.

resultsThe main causes of pain and discomfort due to stiffness were surgery-related issues, i.e., component malpositioning and over-voluming, implant loosening, psychological distress, and obesity, which could be considered "modifiable" factors, and expression of profibrotic markers, high material hypersensitivity-related cytokines level, male gender, previous contralateral TKA, and high pre-operative pain, which could be considered "non-modifiable" factors.

conclusionThe use of alternative technologies such as surgical robots, anatomy-based devices, and more inert and less stiff component materials could help in reducing stiffness caused by both modifiable and even some non-modifiable factors. Furthermore, early diagnostic detection of stiffness onset could consistently support surgeons in patient-specific decision-making.

Indexed as

Arthroplasty, Replacement, KneeHumansMalePainPainStiffnessTotal knee arthroplasty

Identifiers

PMID33821306
OpenAlexW3141174783

What OpenQuestion holds

Textmetadata
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.