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Published in: Archives of Orthopaedic and Trauma Surgery 7/2023

26-11-2022 | Patella Dislocation | Orthopaedic Surgery

Elevated hip adduction angles and abduction moments in the gait of adolescents with recurrent patellar dislocation

Authors: Elias Ammann, Rahel L. Meier, Erich Rutz, Kathrin Studer, Victor Valderrabano, Carlo Camathias

Published in: Archives of Orthopaedic and Trauma Surgery | Issue 7/2023

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Abstract

Introduction

Impaired hip kinematics and kinetics may incite patellar instability. This study tested the hypothesis that hip adduction and internal rotation angles during gait are higher in adolescents with recurrent patellar dislocations compared to healthy controls.

Material and methods

Case–control study. Eighty-eight knees (67 patients) with recurrent patellar dislocation (mean age 14.8 years ± 2.8 SD) were compared to 54 healthy knees (27 individuals, 14.9 years ± 2.4 SD). Peak hip, knee and pelvis kinematics and kinetics were captured using 3D-gait analysis (VICON, 12 cameras, 200 Hz, Plug-in-Gait, two force plates) and compared between the two groups. One cycle (100%) consisted of 51 data points. The mean of six trials was computed.

Results

Peak hip adduction angles and abduction moments were significantly higher in patients with recurrent patellar dislocation compared to the control group (p < 0.001 and 0.002, respectively). Peak internal hip rotation did not differ significantly.

Conclusion

Elevated hip adduction angles and higher hip abduction moments in gait of adolescents with recurrent patellar dislocation may indicate an impaired function of hip abductors that contributes to patellar instability.
Literature
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Metadata
Title
Elevated hip adduction angles and abduction moments in the gait of adolescents with recurrent patellar dislocation
Authors
Elias Ammann
Rahel L. Meier
Erich Rutz
Kathrin Studer
Victor Valderrabano
Carlo Camathias
Publication date
26-11-2022
Publisher
Springer Berlin Heidelberg
Published in
Archives of Orthopaedic and Trauma Surgery / Issue 7/2023
Print ISSN: 0936-8051
Electronic ISSN: 1434-3916
DOI
https://doi.org/10.1007/s00402-022-04703-y

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