Evidence map›Paper›PMID 34743233›Full record

ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2022

Outcomes and reoperation rates after tibial tubercle transfer and medial patellofemoral ligament reconstruction: higher revision stabilization in patients with trochlear dysplasia and patella alta.

Jacob D Gorbaty, Dax T Varkey, Ian S Hong, David P Trofa, Susan M Odum, Dana P Piasecki, Bryan M Saltzman, James E Fleischli

Abstract read
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In one paragraph

Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
0.6field-weighted citation impact, top 36% 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

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 8 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. The severity of patellar and trochlear dysplasia are correlated.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022
    Article
  8. 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

8 authors at 5 institutions in 2 countries.

Jacob D GorbatyDepartment of Orthopaedic Surgery, Atrium Health, 1025 Morehead Medical Drive, Suite 300, Charlotte, NC, 28207, USA.
Dax T VarkeyOrthoCarolina Sports Medicine Center, 1915 Randolph Road, Charlotte, NC, 28207, USA.
Ian S HongOrthoCarolina Sports Medicine Center, 1915 Randolph Road, Charlotte, NC, 28207, USA.
David P TrofaDepartment of Orthopaedics, New York Presbyterian, Columbia University Medical Center, 622 West 168th St, PH 11-1130, New York, NY, 10032, USA.
Susan M OdumMusculoskeletal Institute, Atrium Health, 1320 Scott Ave, Charlotte, NC, 28203, USA.
Dana P PiaseckiOrthoCarolina Sports Medicine Center, 1915 Randolph Road, Charlotte, NC, 28207, USA.
Bryan M SaltzmanOrthoCarolina Sports Medicine Center, 1915 Randolph Road, Charlotte, NC, 28207, USA. Bryan.Saltzman@orthocarolina.com.
James E FleischliOrthoCarolina Sports Medicine Center, 1915 Randolph Road, Charlotte, NC, 28207, USA.
OrthoCarolina · USCarolinas Medical Center · USInstitute for Musculoskeletal Health · AUOrthoCarolina Research Institute · USTexas Health Dallas · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo determine the reoperation rate, risk factors for reoperation, and patient-reported outcomes after isolated or combined tibial tubercle transfer and medial patellofemoral ligament reconstruction, for patellofemoral instability surgery.

methodsPatient's records who underwent medial patellofemoral ligament reconstruction and/or tibial tubercle transfer for patellar instability by 35 surgeons from 2002 to 2018 at a single academic institution were retrospectively reviewed using CPT codes. Four-hundred-and-eighty-six patients were identified. Radiographic measurements, demographic parameters, and subsequent revision procedures and their indications were identified. A modified anterior knee pain survey was conducted by mail and with follow-up phone survey.

resultsThe overall rate of reoperation was 120/486 (24.7%). The most common cause for reoperation was removal of hardware 42/486 (8.6%). The rate of reoperation for isolated medial patellofemoral ligament reconstruction 43/226 (19%) was lower than that of isolated tibial tubercle transfer 45/133 (33.8%) or a combined procedure 32/127 (25.2%) (P = 0.007). Woman had a higher rate of reoperation (29.4%) compared to men (15.9%) (P = 0.002). Patients at risk for a revision stabilization procedure included those with severe trochlear morphology (C or D) (6.1%) and those with Caton-Deschamps index > 1.3 (7.3%). Patients who underwent reoperation of any kind had poorer patient-reported outcomes.

conclusionThe overall reoperation rate after patellofemoral instability surgery remains high, and any reoperation portends worse patient-reported outcomes. Re-operations for instability are more likely in patients with trochlear dysplasia and patella alta and may benefit from more aggressive initial treatment, such as medial patellofemoral ligament reconstruction and tibial tubercle transfer in combination. Using the results of this study, surgeons will be able to engage in meaningful discussion with patients to counsel patients on expectations postoperatively. LEVEL OF EVIDENCE: IV.

Indexed as

Joint InstabilityPatellar DislocationPatellofemoral JointFemaleHumansLigaments, ArticularMalePatellaReoperationRetrospective StudiesMedial patellofemoral ligament reconstructionOutcomesPatellofemoral instabilityReoperationTibial tubercle transfer

Identifiers

PMID34743233
OpenAlexW3212847108

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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.