Elevated Hip Adduction Angles and Abduction Moments in the Gait of Adolescents with Recurrent Patellar Dislocation

Overview

Journal Arch Orthop Trauma Surg

Specialties Emergency Medicine
General Surgery
Orthopedics

Date 2022 Nov 26

PMID 36435929

Authors

Elias Ammann

Rahel L Meier

Erich Rutz

Kathrin Studer

Victor Valderrabano

Carlo Camathias

Affiliations

Soon will be listed here.

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.

Citing Articles

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