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Which is the Best Method to Determine the Patellar Height in Children and Adolescents
Clinical Orthopedics and Related Research, 08/11/09

Park MS et al. – Intraobserver and interobserver reliability were determined using intraclass correlation coefficients. Of the three methods used to measure patellar height in this study, the IS appeared to be the most reliable and valid in patients older than 13 years with nearly complete ossification. Before this stage of ossification had been achieved, the KS was the only applicable and most reliable but less valid method in younger children.

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Kyoung Min Lee, 08/11/09

Patellar height is associated with various clinical syndromes of knee joint. We asked which methods was the most appropriate for measuring patellar height for different age groups in terms of applicability, validity, and reliability. Applicability was defined as the possibility of identifying the bony landmarks to which each measurement refers. Concurrent validity was defined as proximity to the reference standard. For validity testing, we measured patellar height indices (Insall-Salvati (IS), Blackburne-Peel, and Koshino-Sugimoto (KS) methods) in lateral radiographs and standardized patellar tendon lengths on MR images. As commented, Interobserver and intraobserver reliability were determined using three observers.

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