Pathological Threshold of Patellar Tendon-Trochlear Groove Distance Using Magnetic Resonance Image in Patients with Patellar Instability
Year: 2025
Type: article
Study design: Observational Study
Abstract: Objective: To evaluate and compare the values of the patellar tendon-trochlear groove (PT-TG) distance in individuals with and without patellar instability. Additionally, we aimed to define a cut-off value for the pathological limit of the PT-TG through nuclear magnetic resonance imaging (MRI) in patients with patellar instability. Methods: The PT-TG distance of 52 knees was measured in 48 individuals with objective patellar instability (instability group) by MRI. These measurements were compared with those made in 50 knees of 44 individuals without a history of patellar instability (control group). Results: < 0.001). A value of 15.5 mm was determined as the pathological limit, with an accuracy of 81.4%, in MRI exams. Conclusion: Individuals with patellar instability have statistically higher measurements of PT-TG when compared with patients without it. Therefore, values higher than 15.5 mm for PT-TG seen in MRI exams represent a pathological lateralization force of the extensor mechanism related to patellar instability.
Source: Revista Brasileira de Ortopedia
Authors: Rubens Rosso Nadal, Vinícius Canello Kuhn, Alexandre Codevilla Teixeira, Eduardo Bervian Júnior, Osmar Valadão Lopes Júnior
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4411545307