Patellofemoral arthrodesis as pain relief in extreme patella alta

Venkatesan, S.; Kampen, A. van

doi:10.1007/s00167-014-3203-2

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…Patella alta, defined as a high riding patella relative to the trochlear groove, has been linked to PF joint-related symptoms, such as PF post-traumatic instability 6,7 . Patella alta leads to diminished stability of the PF joint during knee motion, especially during knee extension.…”

Section: Introductionmentioning

confidence: 99%

Association of patella alta with worsening of patellofemoral osteoarthritis-related structural damage: data from the Osteoarthritis Initiative

Haj‐Mirzaian

Guermazi

Pishgar

et al. 2019

Osteoarthritis and Cartilage

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s u m m a r yObjectives: To determine the association between Insall-Salvati ratio (ISR), a measure of patella alta, and worsening of Magnetic Resonance Imaging (MRI)-based osteoarthritis (OA)-related patellofemoral joint structural damages over 24-month in participants of the Osteoarthritis Initiative (OAI). Design: Using weighted random sampling method, we selected a sample of 500 knees (from 1,677 knees with available baseline and 24-months MRI OA Knee Score (MOAKS) measurements), which is OAIrepresentative regarding knee OA-related factors (i.e., baseline age, sex, body mass index (BMI), and radiographic KellgreneLawrence grading). The ISR was measured in all enrolled knees using baseline sagittal 3T-MRI plane by three radiologists. Baseline and 24-month MOAKS variables for patellofemoral bone marrow lesions (BMLs), cartilage damages, and osteophytes were extracted, and the associations between ISR and 24-month worsening of these 3T-MRI features were evaluated using multivariable regression models. After computing receiver operating characteristic curves, the optimal cutoff point of ISR for indicating worsening of patellofemoral OA was determined. P-values were adjusted for multiple comparisons and false discovery rate (FDR) adjusted P-values were reported. Results: In this longitudinal analysis, 24-month worsening of BML (odds ratio [OR] (95% confidence interval [95% CI]):11.18 (3.35e39.6), adjusted-p-value:<0.001) and cartilage scores (OR:7.39 (1.62e34.71), adjusted-p-value:0.042) in lateral patella was associated with higher baseline ISR. However, higher ISR was not statistically associated with medial patellar or medial and lateral trochlear BML or cartilage scores worsening. We determined the optimal cutoff point of ISR!1.14 (95% CI: 1.083e1.284) for predicting lateral patellofemoral OA-related structural damages worsening over 24-months (sensitivity:73.73%; specificity: 66.67%). Conclusions: Given the uncertainly surrounding the results, our overall findings suggest that ISR could be considered as a predictor of lateral patellofemoral OA-related structural damages worsening with the optimal cutoff point of !1.14 using knee sagittal MRI measurements.

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Section: Introductionmentioning

confidence: 99%