Evaluation of the Insall-Salvati Ratio Among the Vietnamese Population: Application for Diagnosis of Patellar Malalignment

An abnormal patellar position has been proven to be associated with anterior knee pain and several other conditions that affect the patellofemoral joint. The purpose of this study was to determine the incidence of patella alta and patella baja and the applicability of the normal range of the Insall-...

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Bibliographic Details
Published in:	Orthopedic research and reviews 2021-01, Vol.13, p.57-61
Main Authors:	Le Hoang Di, Thu, Hoang Ngoc, Thanh, Ngo, Dac Hong An, Le, Nghi Thanh Nhan, Le Trong, Binh, Le Trong, Khoan, Nguyen Thanh, Thao
Format:	Article
Language:	eng
Subjects:	Arthritis Diagnostic imaging Ethnicity Gender differences insall-salvati ratio patellofemoral joint anterior knee pain mri vietnamese Knee Ligaments Magnetic resonance imaging Minority & ethnic groups Morphology Original Research Pain Population Sexes Standard deviation
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Summary:	An abnormal patellar position has been proven to be associated with anterior knee pain and several other conditions that affect the patellofemoral joint. The purpose of this study was to determine the incidence of patella alta and patella baja and the applicability of the normal range of the Insall-Salvati ratio in the Vietnamese population. Magnetic resonance imaging (MRI) was used to examine 455 Vietnamese subjects' knees. The Insall-Salvati ratio-the ratio of patellar ligament length (LL) and patellar length (PL)-was measured using sagittal T1-weighted images. The overall mean LL/PL ratio was 1.02 (standard deviation 0.15). No significant differences in the LL/PL ratio were observed between sexes. The frequencies of patella alta (Insall-Salvati ratio >1.32) and patella baja (Insall-Salvati ratio
ISSN:	1179-1462 1179-1462