ArticleJournal of experimental orthopaedics2025
The lateral patellar retinaculum is thicker in paediatric and adolescent patients with patellofemoral instability: An MRI analysis.
Article in Journal of experimental orthopaedics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Increased sagittal patellar height and reduced trochlear engagement on MRI are associated with recurrent patellar instability in skeletally immature knees: A comparative study.Journal of experimental orthopaedics · 2026Article
- The lateral patellar retinaculum is thicker in paediatric and adolescent patients with patellofemoral instability: An MRI analysis.Journal of experimental orthopaedics · 2025Article
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Purpose: The purpose of this study was to examine the thickness of the lateral patellar retinaculum (LPR) and patellar tilt in paediatric and adolescent patients who undergo a medial patellofemoral ligament (MPFL) reconstruction. The authors hypothesise that patients undergoing MPFL reconstruction will have a thicker LPR and increased patellar tilt when compared to a comparison cohort. Methods: Preoperative magnetic resonance imaging (MRI) of patients ≤ 18 years old who underwent an MPFL reconstruction was retrospectively reviewed. Patients were included if they had a proton density preoperative axial MRI performed internally at our institution. Included patients were matched to a comparison cohort. LPR thickness and patellar tilt were measured on MRI. LPR thickness and patellar tilt were compared between the MPFL cohort and the comparison cohort. Results: A total of 363 patients were identified. 145 participants were successfully matched to the comparison cohort. The mean age in the MPFL cohort was 14.4 ± 2.0 years and 68% were female. The LPR thickness in the MPFL cohort was significantly greater than the LPR thickness in the comparison cohort ( Conclusion: The LPR was significantly thicker on preoperative MRI in patients undergoing MPFL reconstruction compared to a comparison cohort, indicating that increased LPR thickness is a potential marker of patellofemoral instability on imaging. Level of Evidence: Level III.
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