Evidence map›Paper›PMID 22009560›Full record

Trial reportKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2012

In vivo sagittal plane kinematics of the FPV patellofemoral replacement.

A P Monk, B H van Duren, H Pandit, D Shakespeare, D W Murray, H S Gill

Abstract readClinical Trial
PubMed Publisher
In one paragraph

Trial report in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 3 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

19 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Survivorship and functional outcomes of patellofemoral arthroplasty: a systematic review.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2017
    Pooled it
  4. Trial
  5. Review
  6. Article
  7. Article
  8. Review
  9. Article
  10. Review
  11. Article
  12. Isolated patellofemoral arthroplasty reproduces natural patellofemoral joint kinematics when the patella is resurfaced.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2016
    Article
  13. Article
  14. Patellofemoral kinematics during deep knee flexion after total knee replacement: a computational simulation.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2014
    Article
  15. Review
  16. Patellofemoral arthroplasty influences tibiofemoral kinematics: the effect of patellar thickness.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2014
    Article
  17. Evidence of trochlear dysplasia in patellofemoral arthroplasty designs.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2014
    Article
  18. Article
  19. Constraints in posterior-stabilised TKA kinematics: a comparison of two generations of an implant.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2013
    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

6 authors.

A P MonkNuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK.
B H van Duren
H Pandit
D Shakespeare
D W Murray
H S Gill

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeIsolated symptomatic patellofemoral osteoarthritis has been reported in 2% of men and 8% of women older than the age of 55 years in the community. With the development of improved designs and surgical techniques, interest in the use of patellofemoral replacement has increased. The primary aim of the newer generation of patellofemoral replacement implant designs has been to more closely reproduce normal knee kinematics. This study compares the functional sagittal plane in vivo kinematics of a contemporary patellofemoral prosthesis, the FPV, with normal knee kinematics using the patella tendon angle and patella flexion angle relationships with the knee flexion angle.

methodsThe in vivo kinematics for a group of 8 patients (15 knees) with patellofemoral replacement and 22 normal subjects was measured for both a step-up and a lunge exercise using an established fluoroscopic method.

resultsThe patella tendon angle characteristics of the implanted knees were similar to those of the normal knees for the step-up exercise with a significant difference only observed at 50° knee flexion angle. For the lunge exercise, the patella tendon angle for the implanted knee was consistently lower than that measured for the normal knee. Overall the subjects had excellent clinical scores post-patellofemoral replacement showing a significant improvement from their pre-operative scores.

conclusionThe kinematics of the FPV implant was closer to normal than those of total knee implants; however, there were still differences from the normal knees. LEVEL OF EVIDENCE: III.

Indexed as

Knee ProsthesisAdultAgedAged, 80 and overArthroplasty, Replacement, KneeBiomechanical PhenomenaCase-Control StudiesExerciseFemaleFluoroscopyFollow-Up StudiesHumansMaleMiddle AgedOsteoarthritis, KneePatellofemoral Joint

Identifiers

PMID22009560

What OpenQuestion holds

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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.