Erin M. Mannen
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View article: Can predictive and functional methods locate the dysplastic hip joint center?
Can predictive and functional methods locate the dysplastic hip joint center? Open
Although no method is perfect, in the absence of imaging data and an anatomic HJC, this study supports the predictive Harrington (pelvis-only) HJC as the most appropriate for dysplastic hips.
View article: Common infant product materials negatively impact breathing
Common infant product materials negatively impact breathing Open
Background Approximately 3,500 infants die of a sleep-related incident a year in the United States. Although safe sleep guidelines have been implemented, infants are still at risk from many commercial products. Breathing-related injuries o…
View article: Infant muscle activity is modified by inclined environments during different styles of rolling
Infant muscle activity is modified by inclined environments during different styles of rolling Open
View article: Mechanical environment influences muscle activity during infant rolling
Mechanical environment influences muscle activity during infant rolling Open
View article: How do babies roll? Identifying the coordinated movements of infant rolling through video compared to laboratory techniques
How do babies roll? Identifying the coordinated movements of infant rolling through video compared to laboratory techniques Open
BACKGROUND: Rolling is an important developmental milestone for infants where identifying the coordinated movement patterns could facilitate the early identification of motor development delays. Current methods for identifying coordinated …
View article: Can Predictive and Functional Methods Locate the Dysplastic Hip Joint Center?
Can Predictive and Functional Methods Locate the Dysplastic Hip Joint Center? Open
View article: Muscle activation and coordinated movements of infant rolling
Muscle activation and coordinated movements of infant rolling Open
View article: Kinematic Performance of Medial Pivot Total Knee Arthroplasty
Kinematic Performance of Medial Pivot Total Knee Arthroplasty Open
View article: The Combined Influence of Infant Carrying Method and Motherhood on Gait Mechanics
The Combined Influence of Infant Carrying Method and Motherhood on Gait Mechanics Open
Postpartum mothers are susceptible to lumbopelvic pain which may be exacerbated by loading, like carrying their infant in arms and with baby carriers. Nulliparous women carrying infant mannequins may biomechanically mimic mother–infant dya…
View article: Ultrasonographic evaluation of infant hips in the Pavlik harness compared to body‐worn commercial baby carriers
Ultrasonographic evaluation of infant hips in the Pavlik harness compared to body‐worn commercial baby carriers Open
While many factors contribute to development and subsequent correction of developmental hip dysplasia (DDH) in infants, hip positioning and muscle activity play a significant role. Lower‐limb restrictive extension positions, such as with s…
View article: Assessing Scaling and Kinematic Errors in a Coupled Experimental-Computational Infant Musculoskeletal Model
Assessing Scaling and Kinematic Errors in a Coupled Experimental-Computational Infant Musculoskeletal Model Open
Musculoskeletal models are valuable tools that enable the study and quantification of biomechanical parameters, allowing researchers to better understand the mechanisms influencing or contributing to human movement. Furthermore, musculoske…
View article: Mmp13 deletion in mesenchymal cells increases bone mass and may attenuate the cortical bone loss caused by estrogen deficiency
Mmp13 deletion in mesenchymal cells increases bone mass and may attenuate the cortical bone loss caused by estrogen deficiency Open
The protective effect of estrogens against cortical bone loss is mediated via direct actions on mesenchymal cells, but functional evidence for the mediators of these effects has only recently begun to emerge. We report that the matrix meta…
View article: The Influence of Knee Osteoarthritis on Spinopelvic Alignment and Global Sagittal Balance
The Influence of Knee Osteoarthritis on Spinopelvic Alignment and Global Sagittal Balance Open
Osteoarthritis (OA) of the knee is thought to lead to a loss of lumbar lordosis (LL) as a compensation for knee flexion contracture. Changes in sagittal alignment are not limited to the lumbar spine and involve a complex interplay of align…
View article: Challenges in Kinetic-Kinematic Driven Musculoskeletal Subject-Specific Infant Modeling
Challenges in Kinetic-Kinematic Driven Musculoskeletal Subject-Specific Infant Modeling Open
Musculoskeletal computational models provide a non-invasive approach to investigate human movement biomechanics. These models could be particularly useful for pediatric applications where in vivo and in vitro biomechanical parameters are d…
View article: Effects of Weight-Bearing on Tibiofemoral, Patellofemoral, and Patellar Tendon Kinematics in Older Adults
Effects of Weight-Bearing on Tibiofemoral, Patellofemoral, and Patellar Tendon Kinematics in Older Adults Open
Quantification of natural knee kinematics is essential for the assessment of joint function in the diagnosis of pathologies. Combined measurements of tibiofemoral and patellofemoral joint kinematics are necessary because knee pathologies, …
View article: Inter-Rater Reliability of Clinical Testing for Laxity After Knee Arthroplasty
Inter-Rater Reliability of Clinical Testing for Laxity After Knee Arthroplasty Open
View article: Mmp13 deletion in mesenchymal cells increases bone mass and attenuates the cortical bone loss caused by estrogen deficiency
Mmp13 deletion in mesenchymal cells increases bone mass and attenuates the cortical bone loss caused by estrogen deficiency Open
The protective effect of estrogens against cortical bone loss is mediated via direct actions on mesenchymal cells, but functional evidence for the mediators of these effects has only recently begun to emerge. We report that the matrix meta…
View article: Postural Control Differences between Patients with Posterior Tibial Tendon Dysfunction and Healthy People during Gait
Postural Control Differences between Patients with Posterior Tibial Tendon Dysfunction and Healthy People during Gait Open
Background: Patients with posterior tibial tendon dysfunction (PTTD) may exhibit postural instability during walking likely due to a loss of medial longitudinal arch, abnormal foot alignment, and pain. While many studies have investigated …
View article: <i>Mmp-13</i> deletion in cells of the mesenchymal lineage increases bone mass, decreases endocortical osteoclast number, and attenuates the cortical bone loss caused by estrogen deficiency in mice
<i>Mmp-13</i> deletion in cells of the mesenchymal lineage increases bone mass, decreases endocortical osteoclast number, and attenuates the cortical bone loss caused by estrogen deficiency in mice Open
The protective effect of estrogens against cortical bone loss is mediated via direct actions on mesenchymal lineage cells, but functional evidence for the precise molecular mechanism(s) and the mediators of these effects has only recently …
View article: 22370 Mechanical Analysis of Posterior Spinal Fusion Assemblies Intended to Cross the Cervicothoracic Junction
22370 Mechanical Analysis of Posterior Spinal Fusion Assemblies Intended to Cross the Cervicothoracic Junction Open
IMPACT: A comparative evaluation of the mechanical properties of commonly used posterior spinal fusion assemblies will allow surgeons to choose an assembly based on desired properties. The results will better inform surgical decision makin…
View article: Management of Periprosthetic Joint Infection and Extensor Mechanism Disruption With Modular Knee Fusion: Clinical and Biomechanical Outcomes
Management of Periprosthetic Joint Infection and Extensor Mechanism Disruption With Modular Knee Fusion: Clinical and Biomechanical Outcomes Open
Modular KF for EMD and PJI can result in successful outcomes in terms of preventing additional operations and maintaining ambulation. While speed is variable, physical testing shows this method for limb salvage may allow patients to ambula…
View article: Kinematic and Kinetic Changes after Total Hip Arthroplasty during Sit-To-Stand Transfers: Systematic Review
Kinematic and Kinetic Changes after Total Hip Arthroplasty during Sit-To-Stand Transfers: Systematic Review Open
View article: Biomechanical Differences of Moms and Non-Moms
Biomechanical Differences of Moms and Non-Moms Open
During and after pregnancy, mothers biomechanically adapt their walking to account for the additional load of their baby. For example, their posture may change, and mothers can experience pelvic and back pain when carrying loads during wal…
View article: Navigating the Concrete Jungle: Feasibility of Quantifying the Biomechanics of Parents Carrying Infants in a Non-Laboratory Setting
Navigating the Concrete Jungle: Feasibility of Quantifying the Biomechanics of Parents Carrying Infants in a Non-Laboratory Setting Open
For the first year of life, human babies depend on their caregivers to transport them. While carrying infants in arms and in wraps/carriers on a parent’s body have been used for centuries, modern infant product design has introduced altern…
View article: Patellofemoral kinematics in healthy older adults during gait activities
Patellofemoral kinematics in healthy older adults during gait activities Open
View article: Augmentation of core decompression with synthetic bone graft does not improve mechanical properties of the proximal femur
Augmentation of core decompression with synthetic bone graft does not improve mechanical properties of the proximal femur Open
View article: Biomechanics of axial load transmission across the native human elbow
Biomechanics of axial load transmission across the native human elbow Open
Background Elbow and forearm motion are thought to affect elbow load transmission, yet little empirical evidence exists to quantify the biomechanics. Methods Eight fresh-frozen human cadaver upper extremities were utilized. A 100 N axial f…
View article: Exploring infant hip position and muscle activity in common baby gear and orthopedic devices
Exploring infant hip position and muscle activity in common baby gear and orthopedic devices Open
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 biomech…
View article: 4108 Artificial Intelligence-Based Quantification of the General Movement Assessment Using Center of Pressure Patterns in Healthy Infants
4108 Artificial Intelligence-Based Quantification of the General Movement Assessment Using Center of Pressure Patterns in Healthy Infants Open
OBJECTIVES/GOALS: One in six children in the U.S. has a Neurodevelopmental Disability (NDD). Prechtl’s General Movement Assessment (GMA) is a qualitative predictor of early motor dysfunction. However, no quantitative biomechanical assessme…
View article: Infant carrying method impacts caregiver posture and loading during gait and item retrieval
Infant carrying method impacts caregiver posture and loading during gait and item retrieval Open