Apple core sign (femur)

The apple core sign has been used to describe the circumferential erosion of the femoral neck seen in synovial chondromatosis. Although this is the most common process that may lead to an apple core erosion of the femoral neck, this has also been observed with:

• pigmented villonodular synovitis
• amyloidosis
• rheumatoid arthritis

See also 

• apple core sign - colon

Siehe auch:

• synoviale Osteochondromatose
• apple core sign
• Pigmentierte villonoduläre Synovialitis Hüftgelenk
• Apfelbutzenzeichen Kolon
• Rheumatoide Arthritis Hüftgelenk