Your knee joint is made up of bone, cartilage, ligaments and fluid. Muscles and tendons help the knee joint move. When any of these structures is hurt or diseased, you have knee problems. Knee problems can cause pain and difficulty walking.
Knee problems are very common, and they occur in people of all ages. Knee problems can interfere with many things, from participation in sports to simply getting up from a chair and walking. This can have a big impact on your life.
The most common disease affecting the knee is osteoarthritis. The cartilage in the knee gradually wears away, causing pain and swelling.
Injuries to ligaments and tendons also cause knee problems. A common injury is to the anterior cruciate ligament (ACL). You usually injure your ACL by a sudden twisting motion. ACL and other knee injuries are common sports injuries.
Treatment of knee problems depends on the cause. In some cases your doctor may recommend knee replacement.
NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases
Diagnosis and Tests
• X-Ray Exam: Knee (Nemours Foundation)
Treatments and Therapies
• ACL Reconstruction (Mayo Foundation for Medical Education and Research)
• Knee Arthroscopy (American Academy of Orthopaedic Surgeons)
• Knee Rehabilitation Exercises(American Academy of Orthopaedic Surgeons)
• ACL Injuries (American Academy of Family Physicians)
• Baker Cyst (Mayo Foundation for Medical Education and Research)
• Posterior Cruciate Ligament (PCL) Injury (Cleveland Clinic Foundation)
• ClinicalTrials.gov: Anterior Cruciate Ligament (ACL) Injuries (National Institutes of Health)
• ClinicalTrials.gov: Anterior Cruciate Ligament Reconstruction (National Institutes of Health)
• ClinicalTrials.gov: Articular Cartilage Disorders (National Institutes of Health)
• ClinicalTrials.gov: Knee Injuries (National Institutes of Health)
• ClinicalTrials.gov: Menisci, Tibial (National Institutes of Health)
• ClinicalTrials.gov: Patella Disorders (National Institutes of Health)
References and abstracts from MEDLINE/PubMed (National Library of Medicine)
Find an Expert
• Find a Doctor in American Association of Hip and Knee Surgeons(American Association of Hip and Knee Surgeons)
• Osteochondritis Dissecans (For Parents) (Nemours Foundation)
• Medial Collateral Ligament (MCL) Injuries (Nemours Foundation)
• Meniscus Tears (Nemours Foundation)
• Anterior cruciate ligament (ACL) injury — aftercare (Medical Encyclopedia) Also in Spanish
Related Health Topics
National Institutes of Health
The primary NIH organization for research on Knee Injuries and Disorders is the National Institute of Arthritis and Musculoskeletal and Skin Diseases
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Original Article – https://medlineplus.gov/kneeinjuriesanddisorders.html