Evidence map›Paper›PMID 41631170›Full record

ArticleArthroplasty today2026

Combined Patellofemoral Arthroplasty With Patellar Realignment: Surgical Technique and Clinical Outcomes in a Retrospective Case Series.

Paul B Walker, Lisa Su, Mathangi Sridharan, Murray Wong, Matthew Dipane, Guillermo Araujo-Espinoza, Kristofer J Jones, Adam A Sassoon

Abstract read
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Article in Arthroplasty today, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed
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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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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.

Paul B WalkerDepartment of Orthopaedic Surgery, University of California, Los Angeles, CA, USA.
Lisa SuDepartment of Orthopaedic Surgery, University of California, Los Angeles, CA, USA.
Mathangi SridharanDepartment of Orthopaedic Surgery, University of California, Los Angeles, CA, USA.
Murray WongDepartment of Orthopaedic Surgery, University of California, Los Angeles, CA, USA.
Matthew DipaneDepartment of Orthopaedic Surgery, University of California, Los Angeles, CA, USA.
Guillermo Araujo-EspinozaDepartment of Orthopaedic Surgery, University of California, Los Angeles, CA, USA.
Kristofer J JonesDepartment of Orthopaedic Surgery, University of California, Los Angeles, CA, USA.
Adam A SassoonDepartment of Orthopaedic Surgery, University of California, Los Angeles, CA, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Isolated patellofemoral joint arthritis with patellar malalignment in young patients presents a unique challenge, as these patients typically wish to avoid early total knee arthroplasty. The purpose of this retrospective case series is to describe a standardized dual-surgeon technique for combined patellofemoral arthroplasty (PFA) with patellar realignment using medial patellofemoral ligament reconstruction or tibial tubercle osteotomy and to evaluate early clinical and patient-reported outcomes. Methods: A retrospective review was conducted on patients who underwent combined PFA and patellar realignment by a fellowship-trained arthroplasty surgeon and fellowship-trained sports surgeon. Outcomes including implant survivorship, functional outcomes, complications, and patient-reported measures (Knee Injury and Osteoarthritis Outcome Score Joint Replacement, Patient Reported Outcomes Measurement Information System (PROMIS), Global Physical Health, PROMIS Global Mental Health, and Forgotten Joint Score) were assessed. Results: Eleven knees in 9 patients were included (55.5% female; median age 41 ± 13.4 years; median body mass index 26 ± 6.2). All knees had isolated patellofemoral arthritis. Nine knees underwent PFA with medial patellofemoral ligament reconstruction for instability or dislocation, while 2 underwent PFA with tibial tubercle osteotomy for patella alta. Two patellae were chronically dislocated, additionally requiring lateral release. Six knees had prior failed stabilizing procedures. The mean operative time was 121 minutes (94-161), with a mean follow-up of 24.0 ± 11.5 months. One patient experienced a periprosthetic patellar fracture at 10 months, followed by a refracture at 14 months, requiring open reduction and internal fixation and extensor mechanism repair. No cases of re-dislocation, maltracking, infections, wound complications, or other medical issues occurred. Knee Injury and Osteoarthritis Outcome Score Joint Replacement scores improved by an average of 14.8 ± 11 points. Conclusions: Combined PFA and patellar realignment surgery can be done efficiently and is associated with improved patient-reported outcomes, with complications limited to a single case of periprosthetic patellar fracture.

Indexed as

MPFL reconstructionPatellar instabilityPatellofemoral arthritisPatellofemoral arthroplastyTibial tubercle osteotomy

Identifiers

PMID41631170
PMCPMC12860788

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