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Comparative Study
. 2000 Aug;216(2):582-5.
doi: 10.1148/radiology.216.2.r00au07582.

Patellar instability: assessment on MR images by measuring the lateral trochlear inclination-initial experience

Y Carrillon  1 , H Abidi, D Dejour, O Fantino, B Moyen, V A Tran-Minh
Affiliations
Comparative Study

Patellar instability: assessment on MR images by measuring the lateral trochlear inclination-initial experience

Y Carrillon et al. Radiology. 2000 Aug.

Abstract

Lateral trochlear inclination (LTI) of the knee was compared on magnetic resonance (MR) images obtained in 30 patients with patellar instability (PI) and 30 patients with nonspecific internal knee derangement. Differences in LTI values between the two populations were significant (P <.001). Reproducibility of the measurement was judged excellent with an intraclass correlation superior to 0.98. Below a threshold value fixed at 11 degrees, LTI appears to be an excellent diagnostic test of PI with a sensitivity of 0.93 (28/30), a specificity of 0.87 (26/30), and an accuracy of 0.90 (54/60).

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