Lumbar manipulation and exercise in the management of anterior knee pain and diminished quadriceps activation following acl reconstruction: a case report.

Background And Purpose: Quadriceps weakness is a common finding following knee injuries or surgery, and can be associated with significant functional limitations. This weakness or muscle inhibition may be due to central inhibitory mechanisms, rather than local peripheral dysfunction. Lumbopelvic manipulation has been shown to effect efferent muscle output by altering nociceptive processing.