Comment: The main reference [2] does not exist. Ldm1954 (talk) 17:17, 17 April 2025 (UTC)
Biomechanical equation modeling penile oscillatory dynamics
The Viktor equation is a biomechanical model that describes the natural frequency of small-angle oscillations of an erect human penis, conceptualized as a uniform, rigid rod pivoted at the base. The equation accounts for restoring torques from both gravity and muscle-generated resistance, yielding a closed-form expression for the angular natural frequency (
). Though idealized, the model aids in understanding mechanical dynamics relevant to sexual medicine, prosthetic design, and diagnostic instrumentation.