The historical perspective of umbilical hernia is as follows:  
In 1855, Dr. Henry Porter was the first to publish a case of umbilical hernia with rupture. In 1876, Dr. MG Oxley published a case of umbilical hernia operation.
What is the historical understanding or viewpoint regarding umbilical hernia?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: What is the historical understanding or viewpoint regarding umbilical hernia? [/INST] \n The historical perspective of umbilical hernia is as follows:  
In 1855, Dr. Henry Porter was the first to publish a case of umbilical hernia with rupture. In 1876, Dr. MG Oxley published a case of umbilical hernia operation.</s>