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Kinematic patterns for hindlimb obstacle avoidance during sheep locomotion.

Diana Costa1, Camila Cardoso Diogo1, Luís Maltez da Costa1,2

  • 1a Department of Veterinary Sciences , University of Trás-os-Montes e Alto Douro , Vila Real , Portugal.

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Sheep use specific leg movements to clear obstacles, providing baseline data for peripheral nerve repair studies. This research establishes normal hindlimb motion for assessing common peroneal nerve injuries in sheep.

Keywords:
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Area of Science:

  • Biomedical Engineering
  • Neuroscience
  • Animal Locomotion

Background:

  • Peripheral nerve reconstruction often yields suboptimal functional recovery.
  • Sheep models are underutilized for nerve regeneration research compared to rodents.
  • Gait analysis has not been previously employed to assess nerve repair in sheep.

Purpose of the Study:

  • To establish kinematic data for objective assessment of ankle joint motion in ovine models.
  • To serve as a template for future studies on common peroneal nerve injury and repair.
  • To evaluate obstacle negotiation and compensatory joint strategies during locomotion in sheep.

Main Methods:

  • Kinematic data collection during obstacle negotiation in neurologically intact sheep.
  • Analysis of spatial and temporal gait parameters.
  • Focus on hindlimb joint motion (hip, knee, ankle, metatarsophalangeal) during obstacle clearance.

Main Results:

  • Sheep exhibit distinct spatial and temporal strategies to increase hoof height when clearing obstacles.
  • Increased flexion at the knee, ankle, and metatarsophalangeal joints during the swing phase facilitates obstacle clearance.
  • The hip joint's motion is not significantly affected during this process.

Conclusions:

  • This study provides essential baseline kinematic data for the neurologically intact ovine hindlimb during obstacle negotiation.
  • The findings establish normal motion parameters crucial for future research on peripheral nerve injuries, particularly the common peroneal nerve, in sheep.
  • The study highlights the utility of gait analysis in the ovine model for evaluating functional recovery after nerve repair.