What question did this study set out to answer?

This study aims to explore the relationship between quadriceps malalignment and recurrent patellofemoral instability in native knees.

May 22, 2026Knee Surgery Sports Traumatology ArthroscopyOpen Access

Quadriceps malalignment is strongly associated with recurrent patellofemoral instability in native knees

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This study aims to explore the relationship between quadriceps malalignment and recurrent patellofemoral instability in native knees.
Retrospective comparative cohort study of patients with recurrent patellofemoral instability and a control group with medial compartment osteoarthritis.
Twenty patients per group underwent analysis of quadriceps alignment using computed tomography scans and evaluated anatomical measurements.
Statistical comparisons were performed using one-way ANOVA and Student t-tests for parametric variables.
The quadriceps tendon axial angle in the instability group averaged 24.8° external rotation, significantly higher than 2.5° in the control group (p < 0.001).
65% of the PFI group had trochlear dysplasia compared to 10% in controls (p < 0.001).
Quadriceps malalignment showed strong association with PFI (AUC 0.94).

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Implication

Preliminary retrospective cohort study finds quadriceps malalignment linked to recurrent patellofemoral instability in native knees, suggesting implications for treatment.

Cite This Study

Sasanelli et al. (2026) studied this question.

synapsesocial.com/papers/6a0ff351d674f7c03778be83 https://doi.org/10.1002/ksa.70448

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Implication

Preliminary retrospective cohort study finds quadriceps malalignment linked to recurrent patellofemoral instability in native knees, suggesting implications for treatment.

Quadriceps malalignment is strongly associated with recurrent patellofemoral instability in native knees

Key Points

Discussion

Implication

Cite This Study

Quadriceps malalignment is strongly associated with recurrent patellofemoral instability in native knees

Key Points

Discussion

Implication

Cite This Study

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