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Area of Science:

  • Sports Medicine
  • Biomechanics
  • Orthopedics

Background:

  • Repetitive lumbar extension/rotation are known risk factors for lumbar spondylolysis.
  • Lumbar spondylosis is also observed in athletes not involved in sports with these motions, like track and field athletes.

Purpose of the Study:

  • To investigate the impact of running on the pathological mechanism of lumbar spondylolysis.
  • To compare biomechanical stresses of running with those of known risk activities.

Main Methods:

  • Retrospective analysis of 89 pediatric patients diagnosed with lumbar spondylolysis.
  • Motion analysis of 17 male athletes performing maximal sprint, comfortable running, and two types of soccer kicks using Vicon motion capture.

Main Results:

  • 13% of spondylolysis patients were track and field athletes.
  • Maximal sprinting (Dash) showed similar hip extension angles, spine rotation, and hip flexion moments to soccer kicks (Shoot).
  • Pelvic rotation was greater during kicking than running.

Conclusions:

  • Sprinting kinematics and kinetics resemble those of soccer kicks.
  • Running, especially sprinting, may induce mechanical stress on the lumbar spine's pars interarticularis, potentially leading to spondylolysis.