Mechanics of post-cam engagement during simulated dynamic activity.
Bottom Line: Flexion angle and post-cam velocity at engagement demonstrated considerable ranges among designs (23°-89°, and 0.05-0.22 mm/°, respectively).Post-cam velocity was correlated (r = 0.89) with tibiofemoral condylar design features.Condylar geometry, in addition to post-cam geometry, played a significant role in minimizing engagement velocity and forces and stresses in the post.
Affiliation: Center for Orthopaedic Biomechanics, University of Denver, 2390 S. York St., Denver, Colorado 80208, USA.Show MeSH
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Mentions: The flexion angle at engagement ranged from 23° to 89° among the eight designs, and correlated well (r = 0.97) with the initial distance between the post and the cam (at the start of the squat cycle) and to a lesser non-significant extent the AP position of the posterior surface of the post (r = 0.62, p = 0.1; Fig. 4).
Affiliation: Center for Orthopaedic Biomechanics, University of Denver, 2390 S. York St., Denver, Colorado 80208, USA.