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This exercise helps stretch and strengthen your knee.

Step-up exercises help stretch and strengthen your knee. Learn how to do this exercise.

Tympanoplasty can repair a damaged eardrum, stop infection, and improve hearing. During surgery, you may be given general anesthesia, or local anesthesia with sedation. Tympanoplasty takes about 1 to 3 hours.

Mastoidectomy can remove infected bone and growths from the middle ear. But it may not always improve your hearing in the affected ear. Read on to learn more.

Dust mites are perhaps the most common cause of nasal allergies. Read on to learn how to keep them under control.

A detailed look at pet allergies, plus tips on how to reduce your exposure to these allergens.

A detailed look at how to care for your hearing aid, including daily cleaning and changing batteries. Includes safety tips on keeping hearing aid batteries out of the reach of children and pets.

Exams of the feet and ankles make sure that your child's bones are growing correctly and that your child is walking correctly. This helps prevent some future foot problems. Learn about foot care for your child, including when your child may need foot care and when to call the doctor.

Read how Osgood-Schlatter disease affects your knee, and see an illustration of the knee showing where it occurs.