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Cartilage is the tough but flexible tissue that covers the ends of your bones at a joint. It also gives shape and support to other parts of your body, such as your ears, nose and windpipe. Healthy cartilage helps you move by allowing your bones to glide over each other. It also protects bones by preventing them from rubbing against each other.

Injured, inflamed, or damaged cartilage can cause symptoms such as pain and limited movement. It can also lead to joint damage and deformity. Causes of cartilage problems include :

• Tears and injuries, such as sports injuries
• Genetic factors
• Other disorders, such as some types of arthritis

Osteoarthritis results from breakdown of cartilage.

NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases

Fourteen of the 26 bones in your feet are in your toes. The toes, particularly your big toe, help you move and keep your balance. Playing sports, running, stubbing your toe, and dropping something on your foot can damage your toes. Wearing shoes that are too loose or too tight can also cause toe problems. Certain diseases, such as severe arthritis, can cause toe problems and pain. Gout often causes pain in the big toe.

Common toe problems include :

• Corns and bunions
• Ingrown toenails
• Sprains and dislocations
• Fractures (broken bones)

Treatments for toe injuries and disorders vary. They might include shoe inserts or special shoes, padding, taping, medicines, rest, and in severe cases, surgery.

If you are like most people, you walk thousands of steps each day. You walk to do your daily activities, get around, and exercise. It's something that you usually don't think about. But for those people who have a problem with walking, daily life can be more difficult.

Walking problems may cause you to:

• Walk with your head and neck bent over
• Drag, drop, or shuffle your feet
• Have irregular, jerky movements when walking
• Take smaller steps
• Waddle
• Walk more slowly or stiffly

The pattern of how you walk is called your gait. Many different diseases and conditions can affect your gait and lead to problems with walking. They include:

• Abnormal development of the muscles or bones of your legs or feet
• Arthritis of the hips, knees, ankles, or feet
• Cerebellar disorders, which are disorders of the area of the brain that controls coordination and balance
• Foot problems, including corns and calluses, sores, and warts
• Infections
• Injuries, such as fractures (broken bones), sprains, and tendinitis
• Movement disorders, such as Parkinson's disease
• Neurologic diseases, including multiple sclerosis and peripheral nerve disorders
• Vision problems

To make a diagnosis, your health care provider will ask about your medical history and do a physical exam. This will include checking your bones and muscles and doing a neurological exam. In some cases, you may have other tests, such as lab or imaging tests.

Treatment of walking problems depends on the cause. If the cause is a medical condition, treating that condition often improves your walking. Some common types of treatments for walking problems may include:

• Medicines
• Mobility aids such as walkers and canes
• Physical therapy
• Special shoes, insoles, splints, or braces
• Surgery