Johannes Otto Kehr was a German surgeon

Surgeon

In medicine, a surgeon is a specialist in surgery. Surgery is a broad category of invasive medical treatment that involves the cutting of a body, whether human or animal, for a specific reason such as the removal of diseased tissue or to repair a tear or breakage...

 and professor of surgery born in Waltershausen

Waltershausen

Waltershausen is a city in the district of Gotha, Thuringia, Germany.The town has a population of 11475 .-Sister cities: Bruay-sur-l'Escaut, France Korbach, Germany Wolbrom, Poland Hanau, Germany -External links:*...

, Thuringia

Thuringia

The Free State of Thuringia is a state of Germany, located in the central part of the country.It has an area of and 2.29 million inhabitants, making it the sixth smallest by area and the fifth smallest by population of Germany's sixteen states....

. He practiced surgery at a private clicic in Halberstädt

Halberstadt

Halberstadt is a town in the German state of Saxony-Anhalt and the capital of the district of Harz. It is located on the German Half-Timbered House Road and the Magdeburg–Thale railway....

, and from 1910 worked in Berlin

Berlin

Berlin is the capital city of Germany and is one of the 16 states of Germany. With a population of 3.45 million people, Berlin is Germany's largest city. It is the second most populous city proper and the seventh most populous urban area in the European Union...

. He is known for the development of operative procedures for the treatment of gall bladder and bile duct

Bile duct

A bile duct is any of a number of long tube-like structures that carry bile.Bile, required for the digestion of food, is excreted by the liver into passages that carry bile toward the hepatic duct, which joins with the cystic duct to form the common bile duct, which opens into the intestine.The...

 diseases.

In the late 19th century, Kehr popularized the cholecystectomy

Cholecystectomy

Cholecystectomy is the surgical removal of the gallbladder. It is the most common method for treating symptomatic gallstones. Surgical options include the standard procedure, called laparoscopic cholecystectomy, and an older more invasive procedure, called open cholecystectomy.-Open surgery:A...

 for the treatment of gallstones. He is credited with performing 2600 operations of the biliary tract during his career.

Eponyms

His name is lent to Kehr's sign

Kehr's sign

Kehr's sign is the occurrence of acute pain in the tip of the shoulder due to the presence of blood or other irritants in the peritoneal cavity when a person is lying down and the legs are elevated. Kehr's sign in the left shoulder is considered a classical symptom of a ruptured spleen...

, which is in an indication of acute pain in the left shoulder

Shoulder

The human shoulder is made up of three bones: the clavicle , the scapula , and the humerus as well as associated muscles, ligaments and tendons. The articulations between the bones of the shoulder make up the shoulder joints. The major joint of the shoulder is the glenohumeral joint, which...

 associated with a ruptured spleen

Spleen

The spleen is an organ found in virtually all vertebrate animals with important roles in regard to red blood cells and the immune system. In humans, it is located in the left upper quadrant of the abdomen. It removes old red blood cells and holds a reserve of blood in case of hemorrhagic shock...

. He also popularized a device for biliary drainage that today is known as "Kehr's T-tube".

Selected publications

• Die chirurgische Behandlung der Gallensteinkrankheit, 1896
• Die in meiner Klinik geübte Technik der Gallensteinoperationen, 1905
• Die Praxis der Gallenwege-Chirurgie in Wort und Bild, 2 volumes- 1913: (life works of Kehr)
• Chirurgie der Gallenwege, 1913