title: Influence of Total Knee Arthroplasty on Gait Mechanics of the Replaced and Non-Replaced Limb During Stair Negotiation.
abstract: This study compared biomechanics during stair ascent in replaced and non-replaced limbs of total knee arthroplasty (TKA) patients with control limbs of healthy participants. Thirteen TKA patients and fifteen controls performed stair ascent. Replaced and non-replaced knees of TKA patients were less flexed at contact compared to controls. The loading response peak knee extension moment was greater in control and non-replaced knees compared with replaced. The push-off peak knee abduction moment was elevated in replaced limbs compared to controls. Loading and push-off peak hip abduction moments were greater in replaced limbs compared to controls. The push-off peak hip abduction moment was greater in non-replaced limbs compared to controls. Future rehabilitation protocols should consider the replaced knee and also the non-replaced knee and surrounding joints.
authors.affiliation: Department of Kinesiology Recreation and Sports Studies, The University of Tennessee, Knoxville, Tennessee; Department of Exercise Science and Outdoor Recreation, Utah Valley University, Orem, Utah.
authors.forename: Tyler W
authors.initials: TW
authors.lastname: Standifird
authors.affiliation: Department of Animal Science, The University of Tennessee, Knoxville, Tennessee.
authors.forename: Arnold M
authors.initials: AM
authors.lastname: Saxton
authors.affiliation: Department of Kinesiology Recreation and Sports Studies, The University of Tennessee, Knoxville, Tennessee.
authors.forename: Dawn P
authors.initials: DP
authors.lastname: Coe
authors.affiliation: Tennessee Orthopaedic Clinic, Knoxville, Tennessee.
authors.forename: Harold E
authors.initials: HE
authors.lastname: Cates
authors.affiliation: Department of Mechanical, Aerospace and Biomedical Engineering, The University of Tennessee, Knoxville, Tennessee.
authors.forename: Jeffrey A
authors.initials: JA
authors.lastname: Reinbolt
authors.affiliation: Department of Kinesiology Recreation and Sports Studies, The University of Tennessee, Knoxville, Tennessee.
authors.forename: Songning
authors.initials: S
authors.lastname: Zhang
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee; D001696:Biomechanical Phenomena; D005684:Gait / Q000502:physiology*; D064368:Healthy Volunteers; D006801:Humans; D021621:Imaging, Three-Dimensional; D007717:Knee / Q000502:physiology / Q000601:surgery*; D007719:Knee Joint / Q000601:surgery; D008875:Middle Aged; D009985:Orthopedics; D020370:Osteoarthritis, Knee / Q000601:surgery*; D016059:Range of Motion, Articular / Q000502:physiology*
keywords: TKA; biomechanics; contralateral; stair ascent; total knee replacement