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Text
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<a href="http://doi.org/10.1016/j.knee.2016.01.021" target="_blank" rel="noreferrer noopener">http://doi.org/10.1016/j.knee.2016.01.021</a>
Pages
450–455
Issue
3
Volume
23
Dublin Core
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Title
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Dynamic tracking influenced by anatomy in patellar instability.
Publisher
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The Knee
Date
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2016
2016-06
Subject
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Adult; Articular; Female; Femur/diagnostic imaging; Humans; Imaging; Joint Instability/*diagnostic imaging; Knee Joint/*diagnostic imaging; Male; Patella/*diagnostic imaging; Patellar Dislocation/*diagnostic imaging; Patellar instability; Patellar tracking; Range of Motion; Recurrence; Three-Dimensional; Tibia/diagnostic imaging; Tibial tuberosity; Tomography; Trochlear dysplasia; X-Ray Computed; Young Adult
Creator
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Elias John J; Soehnlen Neil T; Guseila Loredana M; Cosgarea Andrew J
Description
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BACKGROUND: The current study was performed to correlate anatomical parameters related to trochlear dysplasia, tibial tuberosity position, and patella alta with in vivo patellar tracking for subjects with recurrent patellar instability. METHODS: Eight subjects with recurrent patellar instability that failed conservative treatment were evaluated using computational reconstruction of in vivo knee motion. Computational models were created from dynamic CT scans of the knee during extension against gravity. Shape matching techniques were utilized to position a single model of each bone (femur, patella and tibia) to represent multiple positions of knee extension. Patellar tracking was characterized by the bisect offset index (lateral shift) and lateral tilt. Anatomical parameters were characterized by the inclination of the lateral ridge of the trochlear groove, the lateral distance from the tibial tuberosity to the posterior cruciate ligament attachment (lateral TT-PCL distance), and the Caton-Deschamps index. Stepwise multivariable linear regression analysis was used to relate patellar tracking to the anatomical parameters at low (\textless20 degrees ) and high flexion angles. RESULTS: At low flexion angles, both lateral trochlear inclination and lateral TT-PCL distance were significantly correlated with bisect offset index (p=0.02). Only lateral trochlear inclination was significantly correlated with lateral tilt (p\textless0.001). At high flexion angles, bisect offset index and lateral tilt were correlated with only lateral TT-PCL distance (p
Identifier
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<a href="http://doi.org/10.1016/j.knee.2016.01.021" target="_blank" rel="noreferrer noopener">10.1016/j.knee.2016.01.021</a>
Rights
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Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
2016
Adult
Articular
Cosgarea Andrew J
Elias John J
Female
Femur/diagnostic imaging
Guseila Loredana M
Humans
Imaging
Joint Instability/*diagnostic imaging
Knee Joint/*diagnostic imaging
Male
Patella/*diagnostic imaging
Patellar Dislocation/*diagnostic imaging
Patellar instability
Patellar tracking
Range of Motion
Recurrence
Soehnlen Neil T
The Knee
Three-Dimensional
Tibia/diagnostic imaging
Tibial tuberosity
Tomography
Trochlear dysplasia
X-Ray Computed
Young Adult