Evidence map›Paper›PMID 29188334›Full record

ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2018

Increased in vivo patellofemoral loading after total knee arthroplasty in resurfaced patellae.

Omer Slevin, Florian A Schmid, Filippo Schiapparelli, Helmut Rasch, Michael T Hirschmann

Abstract read
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In one paragraph

Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
4.2field-weighted citation impact, top 5% 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

13 citing papers in PubMed, 26 citations in OpenAlex.

  1. Trial
  2. Article
  3. Alignment changes after open-wedge high tibial osteotomy result in offloading in the patellofemoral joint: a SPECT/CT analysis.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022
    Article
  4. Article
  5. Modern total knee arthroplasty designs do not reliably replicate anterior femoral morphology.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020
    Article
  6. Article
  7. Article
  8. Review
  9. TKA design-integrated trochlea groove rotation reduces patellofemoral pressure.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2019
    Article
  10. Kinematically aligned total knee arthroplasty reproduces native patellofemoral biomechanics during deep knee flexion.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2019
    Article
  11. Flexed femoral component improves kinematics and biomechanical effect in posterior stabilized total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2019
    Article
  12. Article
  13. 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

5 authors at 3 institutions in 2 countries.

Omer SlevinDepartment of Orthopedic Surgery, Meir General Hospital, Kfar Saba, Israel.
Florian A SchmidDepartment of Orthopaedic Surgery and Traumatology, Kantonsspital Baselland (Bruderholz, Liestal, Laufen), 4101, Bruderholz, Switzerland.
Filippo SchiapparelliDepartment of Orthopaedic Surgery and Traumatology, Kantonsspital Baselland (Bruderholz, Liestal, Laufen), 4101, Bruderholz, Switzerland.
Helmut RaschInstitute of Radiology and Nuclear Medicine, Kantonsspital Baselland (Bruderholz, Liestal, Laufen), 4101, Bruderholz, Switzerland.
Michael T HirschmannDepartment of Orthopaedic Surgery and Traumatology, Kantonsspital Baselland (Bruderholz, Liestal, Laufen), 4101, Bruderholz, Switzerland. Michael.Hirschmann@unibas.ch.
Kantonsspital Baselland Standort Bruderholz · CHMeir Medical Center · ILUniversity of Basel · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe primary purpose of the study was to investigate if and how patellar bone tracer uptake (BTU) distribution in SPECT/CT is influenced by patellar resurfacing and the position of femoral and tibial TKA component position.

methodsA total of 104 knees of 103 consecutive patients who underwent primary TKA were prospectively investigated. Primary patellar resurfacing was done in 40 knees while 64 had a TKA without patellar resurfacing. All patients underwent clinical assessment using the knee society score (KSS) and standardized radiographs and Tc-99m-HDP-SPECT/CT before and 12 and 24 months after TKA. Measurements of BTU including intensity and anatomical distribution pattern in eight different patellar regions were performed. Tibial and femoral TKA component position was assessed from 3D reconstructed CT data. Patellar height, thickness and tilt were measured and the distance between the tibial tuberosity and the trochlear groove (TT-TG) was measured. Univariate analysis was performed to identify differences between the two groups (p < 0.05).

resultsSignificantly higher BTU was found in the anterior, non-articular, areas of the patella in patients who underwent patellar resurfacing (p < 0.05). The BTU pattern was similar between the groups, as the maximal uptake in both groups was seen in the superior posterior parts and the minimal uptake was seen in the inferior anterior parts. The mean postoperative KSS was significantly higher in the unresurfaced group after 12 months (p < 0.05), but with no significant difference after 24 months.

conclusionsBased on the findings of the present study, patellar resurfacing is related to significantly higher BTU in the anterior parts of the patella and lower clinical outcomes. In light of these results, routine patellar resurfacing as part of a primary TKA might be reevaluated. SPECT/CT enables a precise localization of the BTU and might be considered as the ideal imaging modality for evaluation and investigate of patellofemoral disorders after TKA.

Indexed as

AgedArthroplasty, Replacement, KneeFemaleFemurHumansKnee JointKnee ProsthesisMaleMiddle AgedOsteoarthritis, KneePatellaSingle Photon Emission Computed Tomography Computed TomographyTibiaIn vivo loadingPatellaPatellar resurfacingTKATKRTotal knee arthroplastyTotal knee replacement

Identifiers

PMID29188334
OpenAlexW2771000382

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.