Klinefelter Syndrome

What is Klinefelter syndrome? Klinefelter syndrome is a genetic condition that affects males. Klinefelter syndrome occurs when a boy is born with one or more extra X chromosomes. Most males have one Y and one X chromosome. Having extra X chromosomes can cause a male to have a variety of physical traits. Many men with an...

Klinefelter syndrome

Klinefelter syndrome is a genetic condition that affects males. Typically, males have one X and one Y chromosome; males with Klinefelter syndrome have at least two X chromosomes in addition to their Y chromosome and, in rare cases, as many as three or four. Symptoms, when present, vary from one person to another...

Knee

The knee joint is where the thighbone (femur) and the shinbone (tibia) come together. A smaller bone called the fibula, on the outside of the lower leg, is also related to the knee joint. The kneecap (patella) is in front of the end of the thigh bone. The bones are connected by several strong ligaments and cushioned by...

Knee Arthritis: Treatments

Learn about the different treatment options for knee arthritis, and hear stories of what others have tried.

Knee Arthroscopy

Learn how knee arthroscopy is done and what to expect after surgery.

Knee Bursitis and Tendon Injury: Preventing Pain

To prevent and ease knee pain during work, play, and daily activities: Stay at a healthy weight. Wear kneepads when kneeling on hard surfaces. Avoid prolonged kneeling. Strengthen and stretch your leg muscles. Pay special attention to your front and back thigh muscles (quadriceps and hamstrings). Avoid deep knee bends...

Knee exercises for osteoarthritis

These exercises can help stretch and strengthen your leg muscles and reduce knee pain and stiffness. Before you try any of these exercises, talk to your doctor or physical therapist. He or she can help design an exercise plan that is best for you. If you feel pain when you do these exercises, stop. Ask your doctor or...

Knee ligaments

Ligaments are tough, ropy fibers that connect one bone to another. The four ligaments of the knee connect the upper leg bone (femur) to the lower leg bone (tibia) and stabilize knee movement. The anterior cruciate ligament (ACL) and the posterior cruciate ligament (PCL) cross inside the center of the knee joint and...

Knee MRI

Courtesy of Intermountain Medical Imaging, Boise, Idaho. All rights reserved. Figure 1 is a side view of the knee that shows the normal location of the outside, or lateral, meniscus. Figure 2 is a similar view that shows a piece of meniscus that has been torn and moved.

Knee Problems and Injuries

Briefly discusses sudden injuries like meniscus tears and torn ligaments that cause knee pain. Covers injuries like bursitis and tendinitis caused by overuse. Offers interactive tool to help decide when to seek care. Also offers home treatment tips.

Knee Replacement Surgery

Learn what to expect during knee replacement surgery and how it can ease the pain of arthritis.

Knee replacement surgery

Normal knee joint Inside a normal knee joint, thick cushioning (cartilage) covers and protects the ends of your bones. This is called hyaline cartilage. Another type of cartilage, called meniscal cartilage or meniscus, acts like a shock absorber between the bones and keeps the knee joint stable by spreading out the load...

Knee Replacement Surgery

Covers surgery to replace the ends of bones in a damaged joint. Includes slideshow on knee replacement. Looks at why surgery is done, risks, and how well it works. Discusses what to expect after surgery and living with a knee replacement.

Knee Replacement: Recovery

Learn about recovering from knee replacement surgery, and listen to stories about different recovery experiences.

Knee tendons

Tendons are tough fibers that connect muscles to bones. The kneecap is connected to the thigh (quadriceps) muscle with the quadriceps tendon, and the patellar tendon connects the kneecap to the lower leg bone.

Knee-to-Chest Exercise

Do not do the knee-to-chest exercise if it causes or increases back or leg pain. Lie on your back with your knees bent and your feet flat on the floor. Bring one knee to your chest, keeping the other foot flat on the floor (or the other leg straight, whichever feels better on your lower back). Keep your lower back...

Knee: Osgood-Schlatter Disease

Osgood-Schlatter disease is a knee problem that causes pain and swelling in the shinbone (tibia) just below the kneecap (patella). This is the spot where the patellar tendon attaches to a bony mound in the knee called the tibial tubercle. The disease is caused by too much stress on the muscles and tendons that support...

Kneecap Dislocation

What is kneecap dislocation? The kneecap (patella) is normally positioned over the front of the knee joint at the base of the thighbone (femur). A kneecap can be dislocated, or moved out of its normal position, when: The inner edge of the kneecap is hit, pushing it toward the outer side of the leg. This can happen more...

Kneeling

Kneeling over a chair, ball, or cushions is good for active labor and for when you need to rest. This position is easy to move into and out of when you feel the need to change position. You may find it eases back labor.

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