The abdominal wall is compressed slowly and then rapidly released. Presence of pain makes the sign positive. It is very similar to rebound tenderness and might be regarded by some authors as the same thing, or at least a particular application of it.
The name comes from German surgeon Jacob Moritz Blumberg.
An inflamed necrotic appendix epiploicum with immediate contact to a non-inflamed appendix vermiformis: a case report.(Case study)
Feb 10, 2009; Authors: Michael Sand (corresponding author) ; Gerd Bonhag ; Falk-Georges Bechara ; Daniel Sand ; Benno Mann ...