Lori A Karol

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Previous work evaluating the effects of surface slope on gait has focused on lower extremity kinematics and kinetics. However, an assessment of multi-segment foot kinematics during walking on inclined and declined ramps has not been previously reported. Sagittal ankle motion using a single rigid body foot model and three-dimensional hindfoot and forefoot(More)
espite recent research developments, Duchenne muscular dystrophy remains a fatal neuromuscular disease , affecting two to three boys in 10,000. It is an inherited X-linked recessive condition caused by a frame-shift mutation in the dystrophin gene at the Xp21.2 locus of the X chromosome 1. Dystrophin is a large cell-membrane protein involved in calcium(More)
Idiopathic scoliosis (IS) is a common paediatric musculoskeletal disease that displays a strong female bias. By performing a genome-wide association study (GWAS) of 3,102 individuals, we identify significant associations with 20p11.22 SNPs for females (P=6.89 × 10(-9)) but not males (P=0.71). This association with IS is also found in independent female(More)
Previous work comparing treadmill and overground walking has focused on lower extremity motion and kinetics, with few identified differences. However, a comparison of multi-segment foot kinematics between these conditions has not been previously reported. Sagittal ankle motion using a single rigid body foot model and three-dimensional hindfoot and forefoot(More)
Slipped capital femoral epiphyses in 12 pairs of bovine femora were pinned with a single screw on one side and two screws on the other. The specimens were subjected to physiological shear loads across the epiphysis (100 cycles at 1.1 Hz; 400 N for slow walking, and 900 N for fast walking). The rates of creep were decreased 23% with double screws compared to(More)
Multisegment foot models provide researchers more-detailed information regarding foot mechanics compared with single rigid body foot models. Previous work has shown that walking speed significantly affects sagittal plane ankle motion. It is important to distinguish changes in intersegment foot mechanics following treatment that are due to clinical(More)
  • B Stephens Richards, Shawne Faulks, Donald Virostek, Cpo, Kevin Felton, Karl Rathjen +6 others
  • 2015
How important is brace compliance in ponseti-treated idiopathic clubfeet? Purpose: For Club feet treated by the Ponseti technique, strict adherence to bracing is considered essential for successful outcomes. The purpose of this paper is to determine treatment outcomes relative to the amount of time bracing was actually utilized. Methods: Infants with(More)
Two children with spastic quadriplegia who developed excessive lumbar lordosis after selective dorsal rhizotomy are described. The rhizotomy did not change the ambulatory status of either child (one nonambulator, one household ambulator). Preservation of unopposed hip flexion in the presence of multiple laminectomies may lead to the development of a(More)