title: Kinetic and kinematic analysis of the right hind limb during trotting on a treadmill in Labrador Retrievers presumed predisposed or not predisposed to cranial cruciate ligament disease.
abstract: OBJECTIVE
  To identify gait characteristics during trotting on a treadmill in nonlame Labrador Retrievers presumed predisposed or not predisposed to cranial cruciate ligament disease (CCLD).
  
  
  METHODS
  Clinically normal Labrador Retrievers presumed predisposed (n = 10) or not predisposed (7) to CCLD.
  
  
  METHODS
  The right hind limb of each dog was classified by use of a predictive score equation that combined tibial plateau angle and femoral anteversion angle as presumed predisposed (high score [> -1.5]) or not predisposed (low score [≤ -1.5]) to CCLD. Tarsal joint, stifle joint, and hip joint kinematics, net moments, and powers were computed.
  
  
  RESULTS
  The stifle joint was held at a greater degree of flexion in limbs presumed predisposed to CCLD (130.9° vs 139.3°). More power was generated by muscles acting on the stifle joint in the early stance phase of limbs presumed to be predisposed to CCLD (2.93 vs 1.64 W/kg). The tarsal joint did not reach the same degree of extension in limbs presumed predisposed to CCLD, compared with that in limbs presumed not predisposed to CCLD (179.0° vs 161.0°). Velocity, stance time, vertical and craniocaudal forces, angular velocities, and net joint muscle moments did not differ between groups.
  
  
  CONCLUSIONS
  Gait mechanics of dogs with high (> -1.5) and low (≤ -1.5) tibial plateau angle and femoral anteversion angle scores were characterized on a treadmill, which may help in the identification of dogs predisposed to CCLD.
authors: Department of Veterinary Clinical Medicine, University of Illinois, Urbana, IL 61820, USA. cragetly@yahoo.fr
authors: Chantal A
authors: CA
authors: Ragetly
authors: Dominique J
authors: DJ
authors: Griffon
authors: M K Iris
authors: MK
authors: Hsu
authors: L Michaela
authors: LM
authors: Klump
authors: Elizabeth T
authors: ET
authors: Hsiao-Wecksler
mesh_terms: D000818:Animals; D016118:Anterior Cruciate Ligament / Q000502:physiology / Q000503:physiopathology*; D001696:Biomechanical Phenomena; D004283:Dog Diseases / Q000000981:diagnostic imaging / Q000503:physiopathology*; D004285:Dogs; D005080:Exercise Test / Q000662:veterinary; D005260:Female; D005269:Femur / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000502:physiology; D005684:Gait; D006614:Hindlimb / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000502:physiology*; D008297:Male; D011859:Radiography; D013264:Stifle / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000502:physiology; D013977:Tibia / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000502:physiology