osteofyt

An osteophyte, also called an osteophyt or bone spur, is a bony outgrowth that forms along the edge of a bone, typically at a joint margin or where a ligament, tendon, or joint capsule attaches. Osteophytes arise as part of the body's response to joint damage or degeneration and are a common feature of osteoarthritis and other degenerative conditions. They can also occur in other sites, such as the heel (heel spur) or at entheseal insertions.

Pathophysiology and locations: Osteophyte formation is driven by attempts to stabilize a worn or stressed joint. As cartilage is lost, the adjacent bone undergoes remodeling and outgrowths develop along the articular margins through endochondral ossification. They may be found in the spine (facet joints and uncovertebral areas), knees, hips, shoulders, fingers, and heels.

Clinical features: Many osteophytes are asymptomatic and found incidentally on imaging. When prominent, they can cause mechanical pain, reduced range of motion, or soft tissue irritation. Spinal osteophytes can compress nerve roots or the spinal cord, producing radicular pain, numbness, weakness, or myelopathy.

Diagnosis: Osteophytes are often visible on plain X-rays and can be further evaluated with CT or MRI if there is concern for neural or soft tissue involvement or if surgical planning is required.

Treatment and prognosis: Asymptomatic osteophytes require no treatment. Symptomatic management includes analgesics, anti-inflammatory medications, physical therapy, and injections for inflammation. Surgical removal or decompression may be considered for persistent pain or neural compression unresponsive to conservative care. The progression of osteophyte-related symptoms generally mirrors the underlying degenerative condition.