ArticleOrthopaedic journal of sports medicine2023
When Should Bony Correction Be Considered in Addition to Medial Patellofemoral Ligament Reconstruction? Results of a Clinically Derived 2-Group Classification of Lateral Patellar Instability Based on 122 Patients at 2- to 5-Year Follow-up.
Article in Orthopaedic journal of sports medicine, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.
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14 citing papers in PubMed, 1 synthesis or guideline pooled it, 17 citations in OpenAlex.
- Large variability in minimal clinically important difference, substantial clinical benefit and patient acceptable symptom state values among literature investigating patellar stabilization surgery: A systematic review.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2026Pooled it
- Age at the time of surgery does not compromise the outcome of deepening trochleoplasty: Results from under and over 30 years old.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2026Article
- Prospective comparative analysis from pre- to postoperative changes in Single Assessment Numeric Evaluation (SANE) for patellofemoral instability.Journal of experimental orthopaedics · 2026Article
- Patellar Tendon-Lateral Trochlear Ridge Distance Measurement as an Indicator of Patellar Instability With Malalignment.Orthopaedic journal of sports medicine · 2026Article
- Haptic Visual and Superimposed Digital Imaging Analysis Improves the Interrater Reliability of J-Sign Assessment in Patients with Patellofemoral Instability: A Prospective Diagnostic Study.Journal of clinical medicine · 2025Article
- Management of first-time patellar dislocation: The ESSKA 2024 formal consensus-Part 2.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2025Article
- Medial Patellofemoral Complex Reconstruction Using the Rectus Femoris Tendon.Arthroscopy techniques · 2025Article
- Accuracy of the visual assessment of patellar tracking is poor and is influenced by trochlear dysplasia.Journal of experimental orthopaedics · 2025Article
- Surgical Techniques to Address Patellofemoral Instability: An Individualized Approach.Arthroscopy techniques · 2025Article
- Haptic-visual evaluation of the J-Sign revealed a significant correlation with patella height, tibial tubercle - trochlear groove distance, trochlear bump height and the total number of risk factors for lateral patellar instability.Journal of orthopaedic surgery and research · 2025Article
- Outcome after isolated medial patellofemoral ligament reconstruction is dependent on age but not on body mass index or gender.Journal of experimental orthopaedics · 2025Article
- Elevated Instability Resolution Angle Predicts Inferior Patient-Reported Outcomes in Isolated Medial Patellofemoral Ligament Reconstruction.Arthroscopy, sports medicine, and rehabilitation · 2025Article
- Preoperative subjective assessment of disease-specific quality of life significantly influenced the likelihood of achieving the minimal clinically important difference after surgical stabilization for recurrent lateral patellar instability.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2025Article
- Adding Tibial Tuberosity Medialization to Medial Patellofemoral Ligament Reconstruction Reduces Lateral Patellar Maltracking During Multidirectional Motion in a Computational Simulation Model.Arthroscopy, sports medicine, and rehabilitation · 2023Article
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Authors and funding
4 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: The need for concomitant bony procedures to realign pathoanatomic risk factors in addition to medial patellofemoral ligament reconstruction (MPFL-R) remains unclear. Purpose: To evaluate a clinically derived 2-part classification of lateral patellar instability aimed at identifying patients indicated for a concomitant bony procedure. Study Design: Cohort study; Level of evidence, 3. Methods: The study included 122 patients (42 male, 80 female; mean ± SD age, 22 ± 6 years) who were assigned to a mild instability group (mIG) and a complex instability group (cIG) based on the reversed dynamic patellar apprehension test (ReDPAT) and J-sign. The mIG had a positive ReDPAT result <40° to 50° of knee flexion and an absent or low-grade J-sign (grade 1), and the cIG had a positive ReDPAT result >40° of knee flexion and/or a high-grade J-sign (grade 2 or 3). The mIG underwent isolated MPFL-R, and the cIG underwent MPFL-R and concomitant bony procedures depending on the established risk factor assessment. For evaluation, the BANFF Patellar Instability Instrument 2.0 (BPII 2.0) and numeric analog scale (0-10) for patellofemoral pain and subjective knee function were used. The minimal clinically important difference for the BPII 2.0 was ascertained by calculating half the standard deviation of baseline scores. Results: Radiographic analysis confirmed a significantly more pronounced pathoanatomic risk factor constellation in the cIG regarding severity of trochlear dysplasia, distal malalignment, and patellar height (all Conclusion: Patients with a high-grade J-sign and/or a positive ReDPAT finding beyond 40° to 50° of knee flexion exhibited a significantly more pronounced pathoanatomic risk factor constellation; however, the correction of modifiable risk factors led to similarly good outcomes to patients who underwent isolated MPFL-R. A slightly higher level of patellofemoral pain after bony procedures was evident in these patients.
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