The effects of pediatric obesity on patellofemoral joint contact force during walking

Gait & Posture
Namwoong KimZachary F Lerner

Abstract

Obesity increases a child's risk of developing knee pain across the lifespan, potentially through elevated patellofemoral joint loads that occur during habitual weight-bearing activities. Do obese children have greater absolute and patellar-area-normalized patellofemoral joint forces compared to healthy weight children during walking? We utilized a cross-sectional design to address the aims of this study. Experimental biomechanics data were collected during treadmill walking in 10 healthy-weight and 10 obese 8-12 year-olds. We used radiographic images to develop subject-specific musculoskeletal models, generated walking simulations from the experimental data, and predicted patellofemoral joint contact force using established techniques. We found that the obese children had 1.98 times greater absolute (p = 0.002) and 1.81 times greater patellar-area-normalized (p = 0.008) patellofemoral joint contact forces compared to the healthy-weight children. We observed a stronger relationship between absolute patellofemoral joint contact force and BMI (r2=0.58) than between patellofemoral joint contact force and body fat percentage (r2=0.38). Our results indicate that obese children walk with increased patellofemoral loads in absolute ter...Continue Reading

Citations

Apr 1, 2020·International Journal of Environmental Research and Public Health·Yinghu PengMing Zhang
Dec 5, 2020·The Journal of the American Academy of Orthopaedic Surgeons·Jerry Y DuBrian N Victoroff
Dec 10, 2020·Journal of Sport and Health Science·Amanda Schenatto FerreiraDanilo de Oliveira Silva
Jun 22, 2021·Journal of Sport and Health Science·Amanda Schenatto FerreiraDanilo De Oliveira Silva
Jul 9, 2021·Current Sports Medicine Reports·Margarita D TsirosSarah P Shultz

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