Inertial measurement units for the detection of the effects of simulated leg length inequalities
Siebers HL, Eschweiler J, Quack VM, Tingart M, Betsch M (2021)
Publication Type: Journal article
Publication year: 2021
Journal
Book Volume: 16
Article Number: 142
Journal Issue: 1
DOI: 10.1186/s13018-021-02212-z
Abstract
Background: Leg length inequalities (LLI) are a common condition that can be associated with detrimental effects like low back pain and osteoarthritis. Inertial measurement units (IMUs) offer the chance to analyze daily activities outside a laboratory. Analyzing the kinematic effects of (simulated) LLI on the musculoskeletal apparatus using IMUs will show their potentiality to improve the comprehension of LLI. Methods: Twenty healthy participants with simulated LLI of 0-4 cm were analyzed while walking with an inertial sensor system (MyoMotion). Statistical evaluation of the peak anatomical angles of the spine and legs were performed using repeated measurement (RM) ANOVA or their non-parametric test versions (Friedman test). Results: Lumbar lateral flexion and pelvic obliquity increased during the stance phase of the elongated leg and decreased during its swing phase. The longer limb was functionally shortened by higher hip and knee flexion, higher hip adduction, dorsiflexion, and lower ankle adduction. Finally, the shorter leg was lengthened by higher hip and knee extension, hip abduction, ankle plantarflexion, and decreased hip adduction. Conclusion: We found differing compensation strategies between the different joints, movement planes, gait phases, and amounts of inequality. Overall the shorter leg is lengthened and the longer leg is shortened during walking, to retain the upright posture of the trunk. IMUs were helpful and precise in the detection of anatomical joint angles and for the analysis of the effects of LLI.
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Germany (DE)
Canada (CA)How to cite
APA:
Siebers, H.L., Eschweiler, J., Quack, V.M., Tingart, M., & Betsch, M. (2021). Inertial measurement units for the detection of the effects of simulated leg length inequalities. Journal of Orthopaedic Surgery and Research, 16(1). https://doi.org/10.1186/s13018-021-02212-z
MLA:
Siebers, Hannah Lena, et al. "Inertial measurement units for the detection of the effects of simulated leg length inequalities." Journal of Orthopaedic Surgery and Research 16.1 (2021).
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