Patellofemoral Update
Patellofemoral Update
December 05, 2019
1 min read

Knee pain linked with increased patellar lateral position after displacement

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According to study results, there was a statistically significant increase in the patellar lateral position after stressed lateral displacement of the painful knee in patients with idiopathic unilateral anterior knee pain.

Researchers identified 23 patients with unilateral anterior knee pain. Conventional imaging, which included measurement of the trochlear sulcus angle, Caton-Deschamps index, tibial tuberosity to trochlear-groove distance, patellar tilt angle and patellar subluxation, was used to examine both knees of all patients. All patients also underwent stress testing with the Porto Patella Testing Device. A physical examination, Kujala score and Lysholm score were used to obtain clinical and functional outcomes.

Results showed painful knees had a significantly higher patellar lateral position after stressed lateral translation compared with non-painful knees (9.8 mm vs. 7.1 mm). The patellar position after lateral displacement significantly correlated with anterior knee pain, according to results of an adjusted multivariate logistic model. The model also demonstrated a reasonable sensitivity of 67% and specificity of 73%. – by Monica Jaramillo


Disclosures: The researchers report no relevant financial disclosures.