Get access

Relationship Between Objective and Subjective Assessment of Limb Function in Normal Dogs with an Experimentally Induced Lameness

Authors

  • ANDREW S. WAXMAN BS,

    1. College of Veterinary Medicine, Iowa State University, Ames, IA
    2. University of Minnesota, St. Paul, MN
    3. Texas A&M University, College Station, TX
    4. University of Liverpool, Leahurst, UK
    Search for more papers by this author
  • DUANE A. ROBINSON DVM,

    1. College of Veterinary Medicine, Iowa State University, Ames, IA
    2. University of Minnesota, St. Paul, MN
    3. Texas A&M University, College Station, TX
    4. University of Liverpool, Leahurst, UK
    Search for more papers by this author
  • RICHARD B. EVANS PhD,

    1. College of Veterinary Medicine, Iowa State University, Ames, IA
    2. University of Minnesota, St. Paul, MN
    3. Texas A&M University, College Station, TX
    4. University of Liverpool, Leahurst, UK
    Search for more papers by this author
  • DONALD A. HULSE DVM, PhD, Diplomate ACVS,

    1. College of Veterinary Medicine, Iowa State University, Ames, IA
    2. University of Minnesota, St. Paul, MN
    3. Texas A&M University, College Station, TX
    4. University of Liverpool, Leahurst, UK
    Search for more papers by this author
  • JOHN F. INNES BVSc, PhD,

    1. College of Veterinary Medicine, Iowa State University, Ames, IA
    2. University of Minnesota, St. Paul, MN
    3. Texas A&M University, College Station, TX
    4. University of Liverpool, Leahurst, UK
    Search for more papers by this author
  • MICHAEL G. CONZEMIUS DVM, PhD, Diplomate ACVS

    1. College of Veterinary Medicine, Iowa State University, Ames, IA
    2. University of Minnesota, St. Paul, MN
    3. Texas A&M University, College Station, TX
    4. University of Liverpool, Leahurst, UK
    Search for more papers by this author

Address reprint requests to Michael G. Conzemius DVM, PhD, Veterinary Clinical Sciences College of Veterinary Medicine, University of Minnesota, 1352 Boyd Avenue, St. Paul, MN 55108. E-mail:conze01@umn.edu.

Abstract

Objective— To evaluate the relationship between previously used subjective and objective measures of limb function in normal dogs that had an induced lameness.

Study Design— Prospective, blinded, and induced animal model trial.

Animals— Normal, adult, and mixed-breed dogs (n=24) weighing 25–35 kg.

Methods— Force platform gait analysis was collected in all dogs before and after induction of lameness. All gait trials were videotaped; 60 video trials were evaluated by 3 surgeons with practice limited to small animal orthopedics and 3 first year veterinary students in an effort to establish the relationship between subjective and objective measures of lameness. Evaluators were unaware of the force platform data.

Results— Concordance coefficients were low for all observers and were similar between students and surgeons. These values were further decreased when normal and non-weight bearing trials were removed. Agreement with the force platform data was low even when observers only had to be within ±10% of the ground reaction forces. When repeat trials were evaluated surgeons had a much higher repeatability compared with students.

Conclusions— Subjective evaluation of the lameness in this study varied greatly between observers and agreed poorly with objective measures of limb function.

Clinical Relevance— Subjective evaluation of gait should be interpreted cautiously as an outcome measure whether performed from a single or from multiple observers.

Ancillary