Tibial tubercle–trochlear groove distance and angle are higher in children with patellar instability

Tibial tubercle–trochlear groove distance and angle are higher in children with patellar... Purpose The purpose of this study was to assess the variations in tibial tubercle–trochlear groove distance and angle as a function of age and gender in a population of children without patellar instability (PI) compared with those with PI. Methods A retrospective review of 869 children’s knee MRIs, ages 5 to 15 years, were evaluated using a control group (792 children) without evidence of PI and a group with PI (77 children). Tibial tubercle–trochlear groove distance (TT–TGd) and angle (TT–TGa) were measured twice by two readers to assess intra- and inter-observer reliability and compared between PI and control groups. In both groups, functions of age and gender on TT–TGd and TT–TGa values were evaluated. Results Both TT–TGd and TT–TGa measurements showed excellent intra- and inter-observer reliability. The mean TT– TGd for the PI group was 17.2 mm (SD 6.6) and significantly higher than the mean TT–TGd for the control group (10.4 SD 3.8 mm, P = 0.001). The mean TT–TGa for the PI was 20.8° (SD 8.3°), which was also significantly higher than the mean TT–TGa for the control group (12.5° SD 4.6°, P < 0.001). Control group revealed a positive correlation between age and TT–TGd measurements (r = 0.243, P < http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Knee Surgery, Sports Traumatology, Arthroscopy Springer Journals

Tibial tubercle–trochlear groove distance and angle are higher in children with patellar instability

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Publisher
Springer Berlin Heidelberg
Copyright
Copyright © 2018 by European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA)
Subject
Medicine & Public Health; Orthopedics
ISSN
0942-2056
eISSN
1433-7347
D.O.I.
10.1007/s00167-018-4997-0
Publisher site
See Article on Publisher Site

Abstract

Purpose The purpose of this study was to assess the variations in tibial tubercle–trochlear groove distance and angle as a function of age and gender in a population of children without patellar instability (PI) compared with those with PI. Methods A retrospective review of 869 children’s knee MRIs, ages 5 to 15 years, were evaluated using a control group (792 children) without evidence of PI and a group with PI (77 children). Tibial tubercle–trochlear groove distance (TT–TGd) and angle (TT–TGa) were measured twice by two readers to assess intra- and inter-observer reliability and compared between PI and control groups. In both groups, functions of age and gender on TT–TGd and TT–TGa values were evaluated. Results Both TT–TGd and TT–TGa measurements showed excellent intra- and inter-observer reliability. The mean TT– TGd for the PI group was 17.2 mm (SD 6.6) and significantly higher than the mean TT–TGd for the control group (10.4 SD 3.8 mm, P = 0.001). The mean TT–TGa for the PI was 20.8° (SD 8.3°), which was also significantly higher than the mean TT–TGa for the control group (12.5° SD 4.6°, P < 0.001). Control group revealed a positive correlation between age and TT–TGd measurements (r = 0.243, P <

Journal

Knee Surgery, Sports Traumatology, ArthroscopySpringer Journals

Published: Jun 1, 2018

References

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