Injections for the knee may be administered by a doctor at a hospital or an orthopedic health facility, according to WebMD. These injectible medicines are typically used to treat osteoarthritis of the knee joint.
There are two major treatments for the osteoarthritis of the knee; one is cortisone injections, and the other is hyaluronan injections, according to WebMD. Cortisone is a corticosteroid that can reduce and even completely cure inflammation of small areas of knee tissue, according to MedicineNet. Hyaluronan is a naturally occurring viscous lubricant and shock-absorbent fluid that can be replenished by a knee injection. Knee injections for osteoarthritis are usually effective for four to twelve weeks after the first administration, according to WebMD.