title: Thorax, pelvis and hip pattern in the frontal plane during walking in unilateral transtibial amputees: biomechanical analysis.
abstract: BACKGROUND
  Lower limb amputees exhibit postural control deficits during standing which can affect their walking ability.
  
  
  OBJECTIVE
  The primary purpose of the present study was to analyze the thorax, pelvis, and hip kinematics and the hip internal moment in the frontal plane during gait in subjects with Unilateral Transtibial Amputation (UTA).
  
  
  METHODS
  The participants included 25 people with UTA and 25 non-amputees as control subjects. Gait analysis was performed using the Vicon(r) Motion System. We analyzed the motion of the thorax, pelvis, and hip (kinematics) as well as the hip internal moment in the frontal plane.
  
  
  RESULTS
  The second peak of the hip abductor moment was significantly lower on the prosthetic side than on the sound side (p=.01) and the control side (right: p=.01; left: p=.01). During middle stance, the opposite side of the pelvis was higher on the prosthetic side compared to the control side (right: p=.01: left: p=.01).
  
  
  CONCLUSIONS
  The joint internal moment at the hip in the frontal plane was lower on the prosthetic side than on the sound side or the control side. Thorax and pelvis kinematics were altered during the stance phase on the prosthetic side, presumably because there are mechanisms which affect postural control during walking.
authors.affiliation: Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, Madrid, Spain.
authors.forename: Francisco
authors.initials: F
authors.lastname: Molina-Rueda
authors.affiliation: Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, Madrid, Spain.
authors.forename: Isabel M
authors.initials: IM
authors.lastname: Alguacil-Diego
authors.affiliation: Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, Madrid, Spain.
authors.forename: Alicia
authors.initials: A
authors.lastname: Cuesta-Gómez
authors.affiliation: Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, Madrid, Spain.
authors.forename: Javier
authors.initials: J
authors.lastname: Iglesias-Giménez
authors.affiliation: Hospital Universitario Virgen de las Nieves, Granada, Spain.
authors.forename: Andrés
authors.initials: A
authors.lastname: Martín-Vivaldi
authors.affiliation: Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, Madrid, Spain.
authors.forename: Juan C
authors.initials: JC
authors.lastname: Miangolarra-Page
mesh_terms: D000671:Amputation, Surgical; D001696:Biomechanical Phenomena; D005260:Female; D005684:Gait; D006615:Hip / Q000503:physiopathology*; D006801:Humans; D007866:Leg; D008297:Male; D008875:Middle Aged; D010388:Pelvis / Q000503:physiopathology*; D013909:Thorax / Q000503:physiopathology*; D016138:Walking