Fibrous dysplasia is a chronic disorder in which an abnormal development of fibrous tissue causes bones to expand. Any bone can be affected. More than one bone can be affected at any one time, and, when multiple bones are affected, it is...

In most cases, a broken kneecap is caused by a direct blow to the front of the knee from a car accident, sports or a fall onto concrete. Two types of surgery may be done to repair a fractured kneecap. Once your kneecap has healed, making...

A fracture is a partial or complete break in the bone. Read on for details about causes, symptoms, and treatment.

A fracture is a partial or complete break in the bone. When a fracture happens, it is classified as either open or closed.

Giant cell tumor of bone is a rare, fast-growing noncancer tumor. It often grows near a joint at the end of a bone. Read on to learn about symptoms, diagnosis, and treatment.

A hip fracture is a break in the thigh bone (femur) of your hip joint. The majority happen to people older than 60 years of age, and women get more hip fractures than men.

A hip pinning is a type of surgery to fix a broken (fractured) hip. Another name for hip pinning is hip fracture repair and internal fixation. Hip pinning uses pins, screws, or plates to help hold broken bones together so they can heal ...

According to the American Association of Orthopaedic Surgeons, more than 200,000 hip replacements are performed each year. Of these, osteoarthritis accounts for the majority of patients needing a hip replacement operation. The physicians...

Hip replacement (total hip arthroplasty) is surgery to replace a worn out or damaged hip joint. The surgeon replaces the old joint with an artificial joint (prosthesis). This surgery may be a choice after a hip fracture or for severe ...

Hip resurfacing is a type of surgery to replace a damaged hip joint. During hip resurfacing, your surgeon makes an incision to access your hip bone and thighbone. Next, he or she trims and caps your femoral head with a smooth metal ...

Iliotibial band syndrome (often called IT band syndrome) is a health problem that causes pain on the outside of the knee. It mostly commonly happens in athletes, especially distance runners, or those new to exercise. Read on to learn more.

Joint aspiration is a procedure to remove fluid from the space around a joint using a needle and syringe. It may be done to relieve swelling and/or to obtain fluid for analysis to diagnose a joint disorder and/or problem.

Knee pain is a common complaint for which there can be many causes. It is important to make an accurate diagnosis of the cause of your symptoms so that appropriate treatment can be directed at the cause.

Learn about the 4 major ligaments of the knee, and about common injuries, symptoms, and treatment.

Knee pain is very common, especially in highly active people who put a lot of pressure on their knees, such as runners. Read on to learn more about this condition.

One of the most important orthopedic surgical advances of this century, knee replacement was first performed in 1968. Improvements in surgical materials and techniques since then have greatly increased the procedure's effectiveness. ...

When your knee is badly damaged by disease or injury, an artificial knee replacement may be considered. During knee replacement surgery, your joint surfaces are replaced by prostheses. These are plastic and metal parts that are used to ...

Kyphoplasty is a procedure used to treat fractures or breaks in the vertebrae. It involves injecting a cement-like material into the vertebra to make it more stable.

A spine affected by kyphosis has a forward curvature of the back bones (vertebrae) in the upper back area, giving an abnormally rounded or humpback appearance.

Laminectomy is a type of surgery in which a surgeon removes part or all of the vertebral bone (lamina). This helps relieve compression of the spinal cord or the nerve roots that may be caused by injury, herniated disk, spinal stenosis ...

Lateral ankle ligament reconstruction is a surgical procedure to tighten and secure one or more ankle ligaments on the outside of your ankle. It typically takes place as an outpatient procedure.

Tears to the lateral collateral ligament most often occur from a direct blow to the inside of the knee. This can stretch the ligaments on the outside of the near too far and may cause them to tear. This type of injury occurs in sports. ...

A Lisfranc joint injury is a type of injury to the bones or ligaments in the middle part of your foot. In this type of injury, there also is usually damage to the cartilage covering these bones.

Lordosis is a deformity of the backbone (spine). It's when the bones of the spine (vertebrae) in the lower back curve inward more than normal.

Everyone has experienced low back pain at one time or another. Most people can recover from low back pain with home treatment, such as changes in activity, weight loss, quitting smoking, and other steps. Sometimes medicine or surgery is ...

Lumbar spinal stenosis is a narrowing of the spinal canal in your lower back that may cause pain or numbness in your legs. Read on for details about causes, symptoms, diagnosis, and treatment.

Magnetic resonance imaging (MRI) uses a magnetic field and radio waves to create cross-sectional images of your head and body. Your doctor uses these detailed, clear images to identify and diagnose many conditions. It is particularly ...

The menisci are crescent-shaped bands of thick, rubbery cartilage attached to the shinbone. They act as shock absorbers and stabilize the knee. Meniscus tears can vary widely in size and severity. Some, but not all, require surgical repair.

The medial collateral ligament's main function is to prevent the leg from extending too far inward, but it also helps keep the knee stable and allows it to rotate. Injuries to the medial collateral ligament most often happen when the ...

Meniscal transplant surgery is a type of surgery that replaces a person's missing or damaged meniscus with a meniscus from a cadaver donor. The surgery usually takes place under general anesthesia.