Topic OverviewMost people had minor problems in the knee one time or another. Most of the time our body movements do not cause problems, but it is not surprising that symptoms develop from everyday wear and damage, or injury. Knee problems and injuries most often occur during sports and recreational activities, work-related tasks or projects at home.Knee in the largest body. Upper and lower bones of the knee are separated by two discs (menisci). Upper leg (thigh) and lower leg bones (tibia and fibula) are connected by ligaments, tendons and muscles. Surface of the bone in the knee joint articular cartilage that absorbs shock and provides a smooth, gliding surface for joint movement included. See picture of the structure of the knee.Although knee problem is often caused by a breach of one or more of these structures will lead it can have various causes. Some people are more likely to develop knee problems than others. Many jobs, sports and entertainment events, age, or an increase in diseases such as osteoporosis, arthritis, your chance of knee problems.Sudden (acute) injuryInjuries are the most common cause of knee problems. Sudden (acute) injury may be caused by a direct blow to the knee, or abnormal rotation, bending the knee or a fall in the knees. Pain, bruising or swelling may be severe and develop within minutes after injury. Nerves and blood vessels may be pinched or damaged during the injury. Knee or lower leg feel numb, weak, or cold, tingling, or pale or blue. Acute injuries include:Sprains, strains or other injury to the ligaments and tendons that connect and support the kneecap.Tears in the rubber cushions the knee joint (meniscus).Cruciate ligament rupture. Medial collateral ligament (MCL) is the most commonly injured knee ligament.Breaks (fracture) of the kneecap, lower femur or upper tibia or fibula. Elbow fractures are most often abnormal force, such as a fall caused by his knee, severe rotational motion, gravity, squats, or when the knee hits an object strongly.Patellar dislocation. This type of dislocation is more common among 13 - to 18-year-old girl. Shards of bone or tissue (free of) from the destruction or displacement can be caught in the joint and prevent movement.Knee dislocation. This is a rare injury that requires great strength. This is a serious injury and require immediate medical attention.Overuse injuriesOveruse injuries occur from repetitive actions or repeated or prolonged pressure on the knee. Activities such as stair climbing, cycling, jogging or jumping stress joints and other tissues and can cause irritation and inflammation. Overuse injuries include:Inflammation of the small air sacs of fluid that cushion and lubricate the knee (bursitis).Inflammation of the tendon (tendinitis) or small tears in the tendons (tendinitis).Thickening or folding the knee ligaments (fold syndrome).Pain in the front of the knee from excessive, trauma, obesity, or problems in the kneecap (patellofemoral pain syndrome).Irritation and inflammation of the band of connective tissue that runs outside of the thigh (iliotibial band syndrome).conditions can lead to knee problemsProblems not directly related to injury or overuse may occur in or around the knee.Osteoarthritis (degenerative joint disease) may cause pain in the knee that is worse in the morning and improves during the day. It often develops at the site of previous trauma. Other types of arthritis such as rheumatoid arthritis, gout and lupus, can also cause pain in the knees, swelling and stiffness.Osgood-Schlatter disease causes pain, swelling and tenderness in front of the knee below the kneecap. This is particularly common in boys under the age of 15 Nov.Popliteal (or Baker's) cyst causes swelling in the knee.Infection of the skin (cellulitis), joint (infectious arthritis), bones (osteomyelitis) or bursa (septic bursitis) can cause pain and reduced movement of the knee.Problems in other parts of the body, a pinched nerve or a problem in the hip, sometimes pain in the knees.Osteochondrosis dissecans causes pain and decreased movement when a piece of bone or cartilage or both knee joints loses blood supply and dies.TreatmentTreatment of knee problems or injuries, first aid measures, rest, bracing, physical therapy, medicine, and in some cases, surgery. Treatment depends on the location, type and severity of the injury and your age, health and activity (eg, work, sports or hobbies).Use the buttons to select "Check Your Symptoms section if and when you should consult your doctor.