Loose Body Removal
What are loose bodies?
Loose bodies in the knee joint are small fragments of cartilage or bone that move freely around the knee in joint fluid, or synovium. They can hinder the joint moment by getting caught in flexion and extension movements. The loose bodies can vary in size from a few millimeters (such as the size of a small pill) to a few centimeters (the size of a quarter). The fragments can lead to damage to the articular cartilage, causing osteoarthritis.
- The feeling of something moving in knee.
- Knee locking as though something is blocking it.
- Injury to cartilage during trauma or sports can lead to the formation of a loose body.
- Osteoarthritis or Charcot’s disease, but the secondary cause is direct or indirect trauma.
- Fibrinous loose bodies in case of inflammatory conditions of knee.
- Synovial chondromatosis (also called synovial osteochondromatosis) is rare; synovium grows abnormally and produces nodules made of cartilage.
There are limited options of non-surgical management of a loose body as it mainly leads to mechanical symptoms which are relieved only after removal. However, physical therapy and anti-inflammatory drugs can be used to help with the symptoms and to keep the joint flexible.
- Arthroscopy: The gold standard today is to remove possibly all loose bodies by arthroscopy, popularly known as “clean out “arthroscopies.It is minimally invasive and allows surgeon to thoroughly examine the knee for loose body and allows to asses any damage to cartilage and treat the condition hence it is best Diagnostic and therapeutic modality available.
- Open arthrotomy: This is less common due to the availability of arthroscopy but it can be done when the loose bodies are very large and numerous or there is associated complete synovial involvement.
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