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Selective mutism is an anxiety disorder. It's when a child can't speak in certain settings but can speak fine in others. Learn about treatment for this condition.

Double outlet right ventricle is a rare heart malformation that is present from birth. Learn more about this condition, including causes, symptoms, diagnosis, and treatment.

Knee osteoarthritis is a condition in which parts of the knee joint wear out. This can lead to pain, stiffness, and limited movement.

Lateral ankle ligament reconstruction is a surgery to tighten and firm up one or more ligaments on the outside of the ankle.

Know what to expect after surgery for sleep apnea.

Having a tracheostomy can affect your ability to talk and communicate with others. A speech therapist (a person trained to help people who have problems speaking) will work with you to address these problems. If you can't talk, you can learn other ways to express your thoughts and feelings to others.

With a tracheostomy, your healthcare provider makes a small hole (stoma) in your windpipe (trachea) through your neck. A tracheostomy tube (trach tube) is then placed into the stoma. Air goes into and out of your lungs through the tube. Here are answers to some common questions that people often ask about tracheostomy.

The sphincter of Oddi is part of your digestive system. A sphincter is a circle of muscle. The sphincter of Oddi surrounds the end of the tubes (ducts) that connect the gallbladder, liver, and pancreas to the first part of the small intestine (duodenum). The sphincter opens to let digestive juices flow through the ducts from the gallbladder, liver, and pancreas into the small intestine. To prevent the juices from leaking back into the ducts, the sphincter squeezes shut.

A dental implant is an artificial tooth root. Your jawbone fuses with the implant to provide a secure platform for an artificial tooth (prosthesis). Abutments are connecting pieces that join the prosthesis to the implants.