The song sung in schoolyards by generations of British children mocking Adolf Hitler for only having “one ball” might be accurate after all.

A German historian has unearthed the Nazi leader’s long-lost medical records, which seem to confirm the urban legend that he only had one testicle.

The records, taken during a medical exam following Hitler’s arrest over the failed Beer hall putsch in 1923, show that he suffered from “right-side cryptorchidism”, or an undescended right testicle.

Notes written by Dr Josef Steiner Brin, the medical officer at Landsberg prison, state “Adolf Hitler, artist, recently writer” was otherwise “healthy and strong”.

Long thought to have been lost, the records of the examination surfaced at an auction in Bavaria in 2010 before swiftly being confiscated by the Bavarian government. They have only recently been properly studied by Professor Peter Fleischmann of Erlangen-Nuremberg University.

Normally, men’s testicles descend from inside the body into the scrotum during childhood, but Fleischmann told German newspaper Bild the records showed one of Hitler’s testicles was “probably stunted”.



The records seem to contradict long-running specualation that Hitler lost one testicle to shrapnel during the Battle of the Somme in the first world war.



That rumour was backed up by Franciszek Pawlar, a Polish priest and amateur historian, who claimed a German army medic who treated Hitler after the shrapnel incident told him about the injury.

The medical records also contradict Hitler’s childhood doctor, who told American interrogators in 1943 that the future Führer’s genitals were “completely normal”.