A MULTIPLE SCALES APPROACH TO A WRIST OSCILLATION MODEL.

Wrist dislocations can occur from the tearing of ligaments in the wrist. In order for the wrist to heal, surgery is often performed. During the post-operative healing process the repaired ligament will stretch causing the range of motion of the wrist to vary with time. To better understand this healing process, a mathematical model that treats the wrist as an oscillator is introduced. A corresponding weakly nonlinear differential equation is investigated using perturbation methods and an asymptotic approximation of the solution is found. A numerical solution to the model is then compared to the asymptotic approximation under various parameter regimes. [ABSTRACT FROM AUTHOR]