Effect of electrical stimulation to the vastus medialis muscle in a patient with chronically dislocating patellae. A case report.

Electrical stimulation to the vastus medialis muscle of a patient with chronically subluxing patellae prevented dislocation of the left patella during its application. No effect could be demonstrated while the stimulator was off. Other clinicians may, nonetheless, wish to adopt the method described in this article for assessing the efficacy of electrical stimulation on patellar dislocation, both while stimulation is applied and while it is not applied.