Evidence map›Paper›PMID 35162134›Full record

ArticleInternational journal of environmental research and public health2022

Are Patellofemoral Ligaments and Retinacula Distinct Structures of the Knee Joint? An Anatomic, Histological and Magnetic Resonance Imaging Study.

Carlo Biz, Carla Stecco, Alberto Crimì, Carmelo Pirri, Michele Fosser, Caterina Fede, Chenglei Fan, Pietro Ruggieri, Raffaele De Caro

Open access · goldAbstract read
In one paragraph

Article in International journal of environmental research and public health, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 14% 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

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Federated knee injury diagnosis using few shot learning.Frontiers in artificial intelligence · 2025
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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 1 institution in 1 country.

Carlo BizOrthopaedics and Orthopaedic Oncology, Department of Surgery, Oncology and Gastroenterology DiSCOG, University of Padua, 35128 Padova, Italy.ORCID 0000-0001-8517-0057
Carla SteccoDepartment of Neurosciences, Institute of Human Anatomy, University of Padua, 35121 Padova, Italy.ORCID 0000-0002-8767-4555
Alberto CrimìOrthopaedics and Orthopaedic Oncology, Department of Surgery, Oncology and Gastroenterology DiSCOG, University of Padua, 35128 Padova, Italy.
Carmelo PirriDepartment of Neurosciences, Institute of Human Anatomy, University of Padua, 35121 Padova, Italy.
Michele FosserOrthopaedics and Orthopaedic Oncology, Department of Surgery, Oncology and Gastroenterology DiSCOG, University of Padua, 35128 Padova, Italy.
Caterina FedeDepartment of Neurosciences, Institute of Human Anatomy, University of Padua, 35121 Padova, Italy.ORCID 0000-0002-4372-7889
Chenglei FanDepartment of Neurosciences, Institute of Human Anatomy, University of Padua, 35121 Padova, Italy.ORCID 0000-0002-1129-0379
Pietro RuggieriOrthopaedics and Orthopaedic Oncology, Department of Surgery, Oncology and Gastroenterology DiSCOG, University of Padua, 35128 Padova, Italy.ORCID 0000-0001-9617-9882
Raffaele De CaroDepartment of Neurosciences, Institute of Human Anatomy, University of Padua, 35121 Padova, Italy.ORCID 0000-0002-2307-0277
University of Padua · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

There is disagreement regarding the description of the patellofemoral ligaments (PFLs), considered by some authors as capsular thickening and by others as independent ligaments. It was hypothesised that the PFLs and retinacula are structures with different histological features. The aim of this study was to describe the stabilising structures of the patella in detail and to determine if the PFLs and retinacula are different and separable structures from a macroscopic, microscopic and imaging viewpoint. An anatomical study was performed on eight knees from five cadavers (mean age, 56.2 years; range, 35-63 years), and a histological study was conducted on specimens from nine patients having a mean age of 65 years (range 35-84 years) who had undergone surgical knee procedures. The imaging study was based on 100 MRIs (96 patients). The mean age was 46 years (range 16-88), and the study analysed the capsular-ligamentous structures. In the medial compartment, the layers and structures were as follows: superficial layer, medial retinaculum; intermediate layer, Medial Collateral Ligament (MCL), Posterior Oblique Ligament (POL) and Medial Patellofemoral Ligament (MPFL); deep layer, deep part of the MCL and joint capsule. In the lateral compartment, the layers and structures were the following: superficial layer, lateral retinaculum; intermediate layer, Lateral Collateral Ligament (LCL) and Lateral Patellofemoral Ligament (LPFL); deep layer, joint capsule. All of the knees examined presented a clearly distinguishable MPFL and LPFL separable from the capsular layer. Histological study: there was a higher density of nerve fibres in retinacula compared to ligaments (

Indexed as

Knee JointLigaments, ArticularAdolescentAdultAgedAged, 80 and overCadaverHumansMagnetic Resonance ImagingMiddle AgedYoung Adultknee anatomyknee imagingpatellofemoral ligamentretinaculum

Identifiers

PMID35162134
PMCPMC8834464
OpenAlexW4205937343

What OpenQuestion holds

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LicenceCC BY
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.