Knee pain is one of the most common reasons that cause of discomfort to the patient. Knee pain can arise from the joint or the periarticular tissues (e.g., the bursae and tendons) or may be referred from the spine, hip joint, femur, or tibia bone. The largest joint in the body, the knee is subject to a lot of trauma and injuries. 

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Common causes of knee pain :

  • Osteoarthritis- Common symptoms of osteoarthritis of the knee include pain, stiffness, tenderness, a limited range of motion, and a popping sound on bending the knee.  Arthritis is a chronic condition that causes joint inflammation. There is a breakdown of the cartilage in the knee followed by bony overgrowth called bony spurs. This causes increased friction in the joint causing pain. Slowly the patient will have a deformity of the joint.
  • Ligament injury- It can occur due to sudden twisting of the knee leading to tearing in the supports of the knee called ligaments. The most commonly injured ligaments are ACL and meniscal. It is especially common in those engaging in physical sports, runners, etc. It causes pain and instability in the knee and sometimes patient feels as if their knee may give way.
  • Patellofemoral pain syndrome.
  • Bursitis and tendinitis.
  • Joint instability.
  • Rheumatoid arthritis - Though it primarily affects small joints like hands and feet, in advanced disease knee can also be affected leading to pain and limited movements.
  • Lumbar radiculopathy - A disc compression in the spine may also cause pain in the knee and calf.
  • Fibromyalgia.
  • Myofascial pain syndromes.

Diagnosis.
An experienced pain specialist will diagnose knee pain based on the typical signs and symptoms of a patient. A note is made of the history of any injury, age, occupation of the patient, and pain localization in the knee. A simple X-ray with a complete blood count is usually enough for the majority of the patient but sometimes MRI may be required to diagnose a ligament injury to know the extent of the damage.

 


Management.
Management of knee pain is stepwise and can be done in the following manner.

  • Conservative care- Initially a patient with a painful knee should be rested. Similarly applying ice or cold packs to the knee can reduce inflammation and swelling when there is an acute knee injury. In chronic knee pain, hot fomentation is helpful.
  • Medications- If there is a lot of pain then anti-inflammatory medications can give dramatic relief. One must be careful to take these medications from a doctor and avoid taking them for too long.
  • Weight loss and exercise can relieve knee pain.
  • Braces can also be prescribed sometimes to give support to knee ligaments and muscles.
  • Injections- Ozone gas and hyaluronic (artificial jelly) injections can give decent relief if medications are unable to relieve pain.
  • Surgery- In advanced knee arthritis, procedures (like Total knee Replacement) should be used.
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Disclaimer: The information provided here should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. The information is provided solely for educational purpose and should not be considered a substitute for medical advice.