Loose Bodies

Loose bodies are small fragments of cartilage or bone that break free and float within a joint, most commonly the knee, elbow, or ankle. They can result from a traumatic injury, osteoarthritis, or a condition called osteochondritis dissecans. While some fragments cause no issues, many can get lodged between the joint surfaces, triggering sharp pain, sudden locking episodes, and swelling. At Mountain Spine & Orthopedics, our specialists use high-resolution imaging to locate the fragment and guide a customized treatment strategy.

Patients often describe intermittent sharp pain, popping, or clicking in the joint. The most distinct symptom is transient locking, where the joint suddenly gets stuck and requires gentle manipulation to unlock, along with swelling after activity.

Participation in high-impact sports, a history of intra-articular fractures or ligament injuries, and chronic osteoarthritis all elevate the likelihood of loose body formation. Certain conditions, such as synovial chondromatosis, can also cause the joint lining to produce multiple cartilage loose bodies.

Diagnosis combines a clinical exam with complimentary imaging. An MRI or dynamic ultrasound can map the fragment's characteristics, while a low-dose CT scan provides a clear definition of any mineralized (bony) bodies. These studies ensure an accurate diagnosis before any intervention.

If a loose body is causing mechanical symptoms like locking, arthroscopic removal is the most effective treatment. Our surgeons use minimally invasive techniques to enter the joint, locate the fragment with a small camera, and extract it. This procedure is done on an outpatient basis and allows for a rapid recovery and return to activities.

Pain from a loose body typically strikes when the fragment wedges between the articulating surfaces of the joint, then subsides once it dislodges and begins floating again. By arthroscopically removing the offending body, our integrated care model provides rapid, lasting pain relief and protects the joint from further cartilage wear.

Prevention focuses on promptly addressing underlying joint issues that can create loose bodies, such as treating cartilage and ligament injuries, maintaining balanced muscle strength for joint support, and modifying high-impact activities that place shear forces on the cartilage.

If sudden joint locking or sharp pain is disrupting your routine, schedule a consultation with Mountain Spine & Orthopedics. Benefit from a complimentary MRI review and a comprehensive second opinion to move forward with a clear plan to remove the loose bodies.