Evidence map›Paper›PMID 18568378›Full record

ArticleClinical orthopaedics and related research2008

Does patellar eversion in total knee arthroplasty cause patella baja?

Vineet Sharma, Panagiotis G Tsailas, Aditya V Maheshwari, Amar S Ranawat, Chitranjan S Ranawat

Open access · greenAbstract readComparative Study
PubMed Full text at PMC Publisher
In one paragraph

Article in Clinical orthopaedics and related research, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 5 pooled it
1.0field-weighted citation impact, top 22% 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

17 citing papers in PubMed, 5 syntheses or guidelines pooled it, 40 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Patellar non-eversion in primary TKA reduces the complication rate.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2016
    Pooled it
  4. No difference in clinical outcomes after total knee arthroplasty between patellar eversion and non-eversion.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2016
    Pooled it
  5. Pooled it
  6. Patellar tendon length during knee flexion of meniscal-bearing and rotating total knee arthroplasty implants.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2017
    Trial
  7. Avoidance of patellar eversion improves range of motion after total knee replacement: a prospective randomized study.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2009
    Trial
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Pseudo-patella baja: a minor yet frequent complication of total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2018
    Article
  16. Review
  17. Pseudo-patella baja after total knee arthroplasty.Medical science monitor : international medical journal of experimental and clinical research · 2011
    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 2 institutions in 1 country.

Vineet SharmaRanawat Orthopedic Center, Lenox Hill Hospital, New York, NY 10021, USA.
Panagiotis G Tsailas
Aditya V Maheshwari
Amar S Ranawat
Chitranjan S Ranawat
Lenox Hill Hospital · USIn-Q-Tel · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

unlabelledSeveral proponents of minimally invasive surgery-total knee arthroplasty (MIS-TKA) have suggested patellar eversion during a standard exposure of the knee may cause shortening of the patellar tendon and poorer outcomes secondary to acquired patella baja. To explore this suggestion, we retrospectively reviewed 135 consecutive TKAs in 110 patients to ascertain the effect of TKA on the postoperative Insall-Salvati ratio. All surgeries were performed using standard TKA techniques with a midline incision, medial parapatellar arthrotomy, partial excision of the fat pad, and routine eversion of the patella. One patient developed a postoperative patella baja, defined as an Insall-Salvati ratio of less than 0.8. The Knee Society score for knee and function in this patient was 75 and 70, respectively. Five additional patients had a decrease in Insall-Salvati ratio by 10% or more but without patella baja. Mean Knee Society score for knee and function in these five patients was 94 (range, 73-99) and 96 (range, 90-100), respectively, as compared with 93 (range, 37-99) and 94 (range, 40-100) in the remaining 104 patients. Our data suggest the incidence of patella baja is low after TKA despite routine patellar eversion. Furthermore, a 10% or more decrease in the Insall-Salvati ratio without patella baja was not associated with a worse clinical outcome. LEVEL OF EVIDENCE: Level IV, therapeutic study. See the Guidelines for Authors for a complete description of levels of evidence.

Indexed as

AdultAgedAged, 80 and overArthroplasty, Replacement, KneeBiomechanical PhenomenaFemaleFollow-Up StudiesHumansKnee JointMaleMiddle AgedOsteoarthritis, KneePatellaPostoperative ComplicationsPrognosisRadiography

Identifiers

PMID18568378
PMCPMC2565024
OpenAlexW2073087587

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.