ArticleJournal of orthopaedic research : official publication of the Orthopaedic Research Society2021
Exploring infant hip position and muscle activity in common baby gear and orthopedic devices.
Article in Journal of orthopaedic research : official publication of the Orthopaedic Research Society, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.
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The trial behind it
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Who cites it
11 citing papers in PubMed, 1 synthesis or guideline pooled it, 14 citations in OpenAlex.
- Safety and benefits of adult-worn slings and baby carriers: a narrative systematic review to inform guidance for parents.BMJ paediatrics open · 2026Pooled it
- Quantifying infants' everyday restrained experiences in the home using wearable inertial sensors.Behavior research methods · 2026Article
- Axial Force Transmission Through Orthosis Straps in a Neonatal Hip Flexion-Abduction Orthosis: An Exploratory In Vivo Study in Infants with Developmental Dysplasia of the Hip.Children (Basel, Switzerland) · 2026Article
- The Impact of Abduction Orthoses for the Treatment of Hip Dysplasia on the Development of Motor Skills: A Systematic Review and Meta-Analysis.Journal of clinical medicine · 2026Review
- Infant muscle activity is modified by inclined environments during different styles of rolling.Infant behavior & development · 2025Article
- Mechanical environment influences muscle activity during infant rolling.Human movement science · 2024Article
- Effect of the Pavlik harness used in the treatment of developmental dysplasia of the hip on unaided sitting and independent walking age.Journal of children's orthopaedics · 2024Article
- Muscle activation and coordinated movements of infant rolling.Journal of biomechanics · 2024Article
- Developmental Dysplasia of the Hip - Part 1.Revista brasileira de ortopedia · 2023Article
- Ultrasonographic evaluation of infant hips in the Pavlik harness compared to body-worn commercial baby carriers.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2023Article
- Developmental Dysplasia of Hip and Post-natal Positioning: Role of Swaddling and Baby-Wearing.Indian journal of orthopaedics · 2021Review
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
Abstract
Infant positioning in daily life may affect hip development. While neonatal animal studies indicate detrimental relationships between inactive lower extremities and hip development and dysplasia, no research has explored infant hip biomechanics experimentally. This study evaluated hip joint position and lower extremity muscle activity of healthy infants in common body positions, baby gear, and orthopedic devices used to treat hip dysplasia (the Pavlik harness and the Rhino cruiserabduction brace). Surface electromyography(EMG) and marker-based motion capture recorded lower extremity muscle activity and kinematics of 22 healthy full-term infants (4.2±1.6 months, 13M/9F) during five conditions: Pavlik harness, Rhino brace, inward-facing soft-structured baby carrier, held in arms facing inwards, and a standard car seat. Mean filtered EMG signal, time when muscles were active, and hip position (angles) were calculated. Compared to the Pavlik harness, infants exhibited similar adductor activity (but lower hamstring and gluteus maximus activity) in the Rhino abduction brace, similar adductor and gluteus maximus activity (but lower quadriceps and hamstring activity) in the baby carrier, similar but highly variable muscle activity in-arms, and significantly lower muscle activity in the car seat. Hip position was similar between the baby carrier and the Pavlik harness. This novel infant biomechanics study illustrates the potential benefits of using inward-facing soft-structured baby carriers for healthy hip development and highlights the potential negative impact of using supine-lying container-type devices such as car seats for prolonged periods of time. Further study is needed to understand the full picture of how body position impacts infant musculoskeletal development.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.